Dresser Pipe Couplings

Complete inventory of Dresser Style 38 couplings, Grade 27 & 42 Buna gaskets, Style 128 flange adapters, reinforcing sleeves, line caps, and the full Dresser Utility Solutions product line — available to ship direct.

41 products
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Featured
Sort by:
Featured
Dresser Style 38 Bolted Coupling
Style 138 Cast - Ductie Coupling Dresser

Dresser

Dresser Style 38 Bolted Coupling

From $87.93
Dresser Style 40 Long Bolted Coupling
Style 40 long bolted coupling

Dresser

Dresser Style 40 Long Bolted Coupling

From $139.31
Dresser Style 128 | Flange Adapter
style 128 flange adapter

Dresser

Dresser Style 128 | Flange Adapter

From $756.77
Dresser Style 31 | Line Cap | Steel Pipe
style 31 line cap

Dresser

Dresser Style 31 | Line Cap | Steel Pipe

From $332.01
Dresser Style 220 | Reinforcing Sleeve
style 220 reinforcing sleeve

Dresser

Dresser Style 220 | Reinforcing Sleeve

From $794.21
Dresser Style 65 | Compression Fittings
Style 65 compression fitting

Dresser

Dresser Style 65 | Compression Fittings

From $36.77
Dresser Style 90 | Compression Fittings
Style 90 universal fitting

Dresser

Dresser Style 90 | Compression Fittings

From $45.14
Dresser Style 90 | Universal Compression Fittings
Style 90 universal fitting

Dresser

Dresser Style 90 | Universal Compression Fittings

From $51.95
Dresser Style 360 All-Around Repair Clamp
Style 360 all around repair coupling

Dresser

Dresser Style 360 All-Around Repair Clamp

From $243.90
Dresser Style 118 | Repair Clamp Handiband
style 118 handiband clamp

Dresser

Dresser Style 118 | Repair Clamp Handiband

From $32.97
Dresser Style 110 | Reinforcing Sleeve
style 110 reinforcing sleeve

Dresser

Dresser Style 110 | Reinforcing Sleeve

From $562.41
Dresser Gasket | 27 Buna S
Dresser Gaskets

Dresser

Dresser Gasket | 27 Buna S

From $31.49
Dresser Pipe Couplings
Description
Authorized Dresser Utility Solutions Distributor

Dresser Couplings,
Gaskets & Fittings

Complete inventory of Dresser Style 38 couplings, Grade 27 & 42 Buna gaskets, Style 128 flange adapters, reinforcing sleeves, line caps, and the full Dresser Utility Solutions product line — available to ship direct.

850+
Dresser SKUs
½"–36"
Size Range
Same Day
Quote Turnaround
🔩
Style 38
Industry Standard Coupling
The most widely specified bolted coupling in North American water and gas distribution. Millions installed since 1905.
🛡️
Grade 27 & 42
Buna S & Buna N Gaskets
Original equipment replacement gaskets. Grade 27 Buna S for gas & water. Grade 42 Buna N for oil, fuel & industrial service.
🔧
Full Line
Complete Dresser Catalog
Style 38, 40, 90, 128, 138, 31, 110, 220, 360 and more — one distributor, one purchase order.
📦
Ship Direct
Contractor & Utility Ready
Stocked inventory ships from Houston. Volume pricing available. Technical support on every order.
Dresser Utility Solutions

Complete Product Families

Every Dresser product category stocked and available. From ½" compression fittings to 36" flange adapters.

38
Best Seller
Style 38 & 40 Bolted Couplings
The benchmark bolted coupling for steel pipe. Style 38 (regular) and Style 40 (long) with Grade 27, 42, and 365 gaskets.
½"–36"Steel PipeGr 27/42/365
Product Details
3038
Best Seller
Style 3038 Replacement Gaskets
Grade 27 Buna S and Grade 42 Buna N replacement gaskets. Plain and armored versions for all service conditions.
½"–24"Gr 27 & 42Plain/Armored
Gasket Guide
128
Top Seller
Style 128 Flange Adapters
AWWA Class D flange adapters for steel and cast/ductile iron pipe — no welding or threading required.
4"–36"AWWA CL DSteel & C.I.
See Specs
110
Top Seller
Style 110 Reinforcing Sleeve
Reinforces weakened or corroded pipe sections without replacement. Two Style 38 couplings, no special tooling.
4"–12"Steel PipeRehab
Learn More
220
Top Seller
Style 220 Reinforcing Sleeve
Heavy-duty sleeve for higher-pressure rehabilitation. Heavier wall than Style 110 for more severe applications.
2"–12"Heavy DutyRehab
Learn More
31
Top Seller
Style 31 Line Cap
Permanently caps steel and cast iron pipe ends. Standard dead-end termination for steel and cast iron ODs.
2"–16"Steel & C.I.Line Cap
See Options
138
Specialty
Style 138 Bolted Coupling
Designed for cast and ductile iron pipe. Fusion bonded epoxy or RED-D shopcoat. 3"–12" nominal.
3"–12"C.I./D.I. Pipe
View Catalog
62
Specialty
Style 62 Reducing Coupling
Connects cast iron pipe to steel pipe of different OD. Fusion bonded epoxy coated. 3"–24" range.
3"–24"C.I. to Steel
View Catalog
360
Repair
Style 360 "All Around" Repair Clamp
Full circle repair clamp. Multiple widths for varying defect lengths. Alloy or SS bolts. 2"–24"+.
2"–24"+7.5"–30" Wide
View Catalog
90
Coupling
Style 90 Cast Body Coupling
Cast iron body coupling with 5" sleeve. Economical for smaller steel pipe. Available with armored gaskets.
¾"–2"Steel Pipe
View Catalog
65
Fitting
Style 65 Compression Fitting
Galvanized compression fitting for steel pipe ½"–2". Regular and long body. Insulating adapter gaskets available.
½"–2"Galvanized
View Catalog
80
Repair
Style 80 Repair Sleeve
Tapping sleeve for line repair with vent access. Multiple vent sizes. Nominal sizes 3"–12".
3"–12"Vent Repair
View Catalog
Best Seller

Dresser Style 38 Bolted Coupling

The most widely specified bolted coupling for steel pipe in water, gas, and industrial distribution — available with Grade 27, 42, and 365 gaskets from ½" through 36".

The Dresser Style 38 is a two-bolt, split-sleeve bolted coupling that has been the standard for steel pipe connections for over a century. Its design compensates for minor pipe misalignment, end irregularities, and thermal expansion — without welding or threading. It allows approximately 1–3° of angular deflection and limited axial movement.

⭐ Why It Outsells Everything Else

The Style 38 works on virtually any steel pipe OD without modification. One part number covers multiple wall thicknesses. Grade 27, 42, or 365 gaskets fit the same body — making it the single coupling that covers water, gas, oil, and industrial applications.

Size: ½"–36"Pipe: Steel IPSBody: Ductile IronBolts: Low-Alloy SteelGaskets: Gr 27 / 42 / 365Max Temp: 1200°F (Gr 365)
Style 38 vs. Style 40

Style 38 (regular body) is the standard choice — compact, low cost, excellent for field repairs and new construction. Style 40 (long body, 12" ring) is specified when you need greater pull-out resistance or higher moment load capacity. Both use identical follower rings and gaskets.

⚠️ Part Number Decoder

0038-0002-011 = Style 38 · Size 0002 (½" pipe, OD 0.840") · Suffix -011 (Grade 27, alloy bolts). Suffix -013 = Armored Gr 27 · -134 = Armored Gr 42 · -345 = Grade 365 High Temp.

Style 38 — Component Breakdown
①
Middle Ring (Body)
Ductile iron. Thickness and length varies by pipe OD. Epoxy or RED-D coated. Houses and aligns end gaskets.
②
Follower Rings (×2)
Ductile iron. Compress end gaskets when bolts are tightened. Beveled face toward pipe end.
③
End Gaskets (×2) — Grade 27 or 42
Split-ring elastomeric seals. Gr 27 = Buna S (water & gas). Gr 42 = Buna N (petroleum). Gr 365 = graphite (high temp).
④
Through-Bolts & Nuts (×2)
Low-alloy steel standard. Stainless steel (-031) available for corrosive environments. Torque to spec is critical.
⑤
Armored Gasket Option (*)
Steel-reinforced gasket for rough pipe surfaces or over-tightening risk. Denoted by * prefix on grade number.
Style 38 & 40 — Size Reference Table (Select Sizes)
Nom. Size OD (in.) Ring Thickness × Length Bolts Bolt Size Grade 27 (Std) Armored *27 Grade 42 *42 Grade 365 Style 40 (Long) Wt. (lbs)
½" 0.840 .156 × 3½" 2 ½ × 6" 0038-0002-011 0038-0002-013 — 0038-0002-345 0040-0001-003 1.8
¾" 1.050 .156 × 5" 2 9/16 × 7¼" 0038-0003-011 0038-0003-013 0038-0003-134 0038-0003-345 0040-0002-003 3.2
1" 1.315 .148 × 5" 2 9/16 × 7¼" 0038-0004-011 0038-0004-013 0038-0004-134 0038-0004-345 0040-0003-003 3.5
1¼" 1.660 .154 × 5" 2 9/16 × 7¼" 0038-0005-011 0038-0005-013 0038-0005-134 0038-0005-345 0040-0004-003 4.0
Sizes 1½" through 36" available — contact us for complete part number listing
Gr 27 = Buna S (water/gas). Gr 42 = Buna N (petroleum). Gr 365 = Graphite fiber, max 1200°F. * = Armored gasket. Style 40 = 12" long ring. Contact sales@watermainsupply.com for volume pricing.
Best Seller · Replacement Gaskets

Grade 27 vs. Grade 42 Buna Gaskets

Choosing the correct gasket grade is critical to long-term seal integrity. This is the complete selection guide for Dresser Style 3038 replacement gaskets.

⭐ Most Commonly Specified
Grade 27
Buna S (Styrene Butadiene Rubber)
  • MaterialStyrene Butadiene Rubber
  • Water ServiceExcellent ✓
  • Natural GasExcellent ✓
  • Oil / PetroleumNot Suitable ✗
  • Temp Range–40°F to +212°F
  • Typical UseWater & Gas Mains
  • Suffix-011 (std) · -013 (armored)
Industrial / Petroleum Service
Grade 42
Buna N (Nitrile Butadiene Rubber)
  • MaterialNitrile Butadiene Rubber
  • Water ServiceGood ✓
  • Natural GasGood ✓
  • Oil / PetroleumExcellent ✓
  • Temp Range–40°F to +250°F
  • Typical UseOil, Fuel, Industrial
  • Suffix-081 (std) · -134 (armored)

Application Selection Guide

🚰
Potable Water Distribution
Mains, services, distribution piping in contact with drinking water.
→ Grade 27 Buna S
🔥
Natural Gas Distribution
Low-pressure natural gas mains and service lines (not LPG/propane).
→ Grade 27 Buna S
🛢️
Crude Oil & Refined Fuels
Diesel, gasoline, jet fuel pipelines. SBR will swell with petroleum contact.
→ Grade 42 Buna N
⚗️
Industrial / Chemical
Aromatic solvents, hydraulic fluids, industrial chemicals with petroleum base.
→ Grade 42 Buna N
🌡️
High-Temperature Service
Steam lines or process piping over 250°F requiring fire-resistance.
→ Grade 365 Graphite
⚡
Corrosive Environments
Aggressive soils, submerged service, or rough/pitted pipe surfaces.
→ Armored (*27 or *42)
Style 3038 Replacement Gaskets — Size Reference
Nom. Size OD (in.) Gasket Section Gr 42 Plain Part No. Gr 42 Armored Part No.
¾" 1.050 9/32 × 9/16" — 3038-0003-008
1" 1.315 9/32 × 9/16" — 3038-0004-008
1¼" 1.660 9/32 × 9/16" — 3038-0005-008
2" 2.375 ½ × 29/32" 3038-0012-005 3038-0012-008
2½" 2.875 ½ × 29/32" 3038-0022-005 3038-0022-008
3" 3.500 ½ × 29/32" 3038-0026-005 3038-0026-008
4" 4.500 ½ × 29/32" 3038-0036-005 P.O.A.
6" 6.625 ½ × 1" 3038-0057-005 3038-0057-008
8" 8.625 ½ × 1 1/16" 3038-0075-005 3038-0075-008
10" 10.750 ½ × 1 1/16" 3038-0087-005 3038-0087-008
12" 12.750 ½ × 1 1/16" 3038-0100-005 3038-0100-008
16" 16.000 5/8 × 1 1/8" 3038-0115-005 3038-0115-008
24" 24.000 5/8 × 1 3/16" 3038-0142-005 P.O.A.
-005 = Plain gasket. -008 = Armored (steel-reinforced). Grade 27 Buna S gaskets also available — contact us for part numbers. P.O.A. = Price on Application.
Technical Reference

Style 38 Installation Guide

Correct installation is critical to achieving a leak-free, long-service-life connection. Follow these steps for all Dresser bolted couplings.

01
🔍
Inspect & Measure Pipe OD
Verify pipe OD using calibrated OD tape or calipers at two points 90° apart. OD must match the coupling's rated range — not nominal size.

A "4-inch" pipe may be IPS (4.500"), cast iron (4.800"), or other. Always match coupling to measured OD.
02
🧹
Clean & Prepare Pipe Ends
Wire brush the pipe surface minimum 4" from each end (6" for Style 40). Remove all rust, scale, mill coating, tar wrapping, and burrs. Gasket seating surface must be clean bare metal or intact epoxy.
Do not use petroleum-based lubricants with Grade 27 (SBR) gaskets. Soap solution only.
03
💧
Lubricate Gaskets
Apply a light coat of neutral soap solution to the inside of each end gasket and the pipe in the seating area. Prevents gasket tearing during assembly and ensures proper seating.
04
🔩
Assemble Coupling
Slide follower rings onto each pipe end — beveled face toward pipe end. Slide end gaskets with split facing top. Center middle ring over the gap. Bring follower rings to middle ring and install bolts hand-tight.
05
🔧
Torque Bolts to Spec
Tighten bolts alternately and uniformly — never tighten one fully before the other. Torque in equal increments to final spec. Gap between follower rings and middle ring should be equal on both sides.
Do not exceed maximum torque — will cut gaskets and cause leaks.
06
✅
Pressure Test & Inspect
Slowly bring to operating pressure. Inspect all bolts for uniform gap. If weeping occurs, depressurize and re-torque that end only. Never re-torque under full pressure. Gap must be equal on both sides.
Bolt Torque Reference — Style 38 & 40
Nominal Size Pipe OD (in.) Bolt Dia. Min Torque (ft-lb) Recommended (ft-lb) Max Torque (ft-lb) Notes
½" – ¾" 0.840 – 1.050 ½" 10 15 – 20 25 Hand-tight + ½ turn acceptable
1" – 1½" 1.315 – 1.900 9/16" 15 20 – 30 40 Alternate bolt tightening required
2" – 3" 2.375 – 3.500 5/8" 25 40 – 60 75 Check gap equality each increment
4" – 6" 4.500 – 6.625 ¾" 50 75 – 100 125 Torque wrench mandatory
8" – 12" 8.625 – 12.750 ¾" – 7/8" 75 100 – 150 175 Two-person recommended
14" – 16" 14.000 – 16.000 1" 100 150 – 200 225 Refer to Dresser install sheet
Armored gaskets may require up to 20% higher torque. Always refer to the Dresser installation instruction sheet supplied with each coupling.
Top Seller · Flange Adapters

Style 128 Steel Flange Adapters

Connect plain end steel or cast iron pipe to flanged valves, pumps, and equipment — no welding, no threading, no pipe modification.

Style 128 — At a Glance
Flange StandardAWWA Class D
Pressure Rating150 lb / 175 psi
Gasket GradeGrade 27 (Buna S)
Steel Pipe Range4" – 36" NOM
Cast Iron Range4" – 36" NOM
Welding RequiredNone ✓
Threading RequiredNone ✓
Body CoatingFusion Bonded Epoxy
Deflection≈1.5° per side
Ordering Note

Steel pipe and cast iron pipe have separate part numbers — OD ranges differ significantly. Specify nominal size + pipe material when requesting a quote.

For Steel Pipe (AWWA CL D)
Nom. Size Pipe OD (in.) Part Number Wt. (lbs)
4" 4.500 0128-1850-002 25
6" 6.625 0128-1852-002 38
8" 8.625 0128-1854-002 52
10" 10.750 0128-9856-002 58
12" 12.750 0128-9858-002 79
16" 16.000 0128-8862-002 103
20" 20.000 0128-8866-002 127
24" 24.000 0128-8868-002 184
30" 30.000 0128-0012-010 260
36" 36.000 0128-8000-020 415
For Cast / Ductile Iron Pipe
Nom. Size OD Range (in.) Part Number Wt. (lbs)
4" 4.74–5.16 0128-1900-002 30
6" 6.84–7.16 0128-9902-002 36
8" 8.99–9.36 0128-1904-002 48
10" 11.04–11.46 0128-1906-002 69
12" 13.14–13.56 0128-1908-002 94
16" 17.40 0128-8912-002 132
24" 25.80 0128-8918-002 230
36" 38.30 0128-8825-002 575
Includes Grade 27 (Buna S) gasket. Grade 42 available on request. Prices effective July 15, 2024. Contact us for quote.
Top Seller · Pipeline Rehabilitation

Style 110 & Style 220 Reinforcing Sleeves

Extend service life of weakened or corroded steel pipe without excavation or replacement. Install over existing pipe using standard Dresser couplings — no welding required.

110
Style 110 Reinforcing Sleeve
Standard Duty
▸
Purpose: Reinforces externally corroded or mechanically weakened pipe, restoring structural integrity without replacement.
▸
Sizes: 4", 6", 8", 10", 12" nominal — covers the most common distribution main sizes.
▸
Installation: Two Style 38 (or 40) couplings on each end. No special tooling, no welding.
▸
Coating: Fusion bonded epoxy or RED-D shopcoat for corrosion protection.
▸
Best For: Distribution mains with localized external corrosion or physical damage where internal pressure is contained but structural strength is compromised.
220
Style 220 Reinforcing Sleeve
Heavy Duty
▸
Purpose: Heavy-duty rehabilitation for more severe applications, higher working pressures, and larger damage areas.
▸
Sizes: 2", 3", 4", 6", 8" nominal — heavier wall than Style 110.
▸
Installation: Same as Style 110 — two end couplings, no welding. Compatible with Style 38, 40, and 138.
▸
Coating: Fusion bonded epoxy and RED-D options for buried service.
▸
Best For: Transmission mains, higher-pressure systems, and where Style 110 wall thickness is insufficient for the operating pressure.
📐 How to Specify a Reinforcing Sleeve

Provide: (1) Nominal pipe size. (2) Measured OD. (3) Required sleeve length (defect span + 6" overlap each side). (4) Operating pressure. (5) Pipe material (steel vs. cast iron). Contact sales@watermainsupply.com for sizing assistance.

Top Seller · Line Termination

Style 31 Line Caps

The standard Dresser solution for permanently capping steel and cast iron pipe dead ends — no welding, no threading, field installable.

The Style 31 Line Cap provides a permanent mechanical closure for plain-end steel and cast iron pipe using the same elastomeric gasket sealing system as the Style 38 coupling. One end seals against the pipe OD; the other is closed with a steel disc. Allows future reconnection — remove cap, cut back, reconnect with a coupling.

Steel vs. Cast Iron Variants

Style 31 is available for both steel pipe OD and cast iron pipe OD — they are not interchangeable. A "4-inch" steel pipe (4.500" OD) and a "4-inch" cast iron pipe (4.800"/5.000" OD) require different part numbers. Always measure the actual pipe OD before ordering.

Nom. Pipe Type OD (in.) Part Number
2" Steel 2.375 0031-0001-202
3" Cast Iron 3.800 0031-0006-203
4" Cast Iron 4.800 0031-0109-203
4" Cast Iron 5.000 0031-0110-204
6" Cast Iron 6.900 0031-0112-203
Additional sizes available — contact us

Application Scenarios

Dead-End Main Termination
Cap end of a distribution main. Allows future extension without full excavation.
Branch Line Abandonment
Decommission a service branch while keeping the main in service. Faster than blind flange.
Construction Phase Capping
Cap installed pipe awaiting connection. Allows pressure testing of completed segments.
Valve Bypass Isolation
Cap a bypass tee outlet no longer needed. Pressure-rated seal without hot work.
Emergency Isolation
Cap damaged pipe end during repair to restore service to the rest of the system.
Cast Iron Rehab
Cap cast iron sections taken out of service during steel main modernization.
Cast & Ductile Iron · Repair

Style 138, Style 62 & Style 360

Couplings for cast/ductile iron pipe and full-circle repair clamps for steel, cast iron, and ductile iron pipe.

Style 138 — Cast/Ductile Iron Coupling
Nom. OD Range (in.) Part No. Wt. (lbs)
3" 3.74–4.02 0138-0002-009 15
4" 4.74–5.06 0138-0003-013 25
6" 6.84–7.16 0138-0005-009 26
8" 8.99–9.36 0138-8007-009 40
10" 11.04–11.46 0138-0009-013 55
12" 13.14–13.56 0138-0011-013 65
RED D shopcoat or Epoxy OD coating options available. Multiple ring lengths per size — contact us.
Style 62 — Cast Iron to Steel (Reducing)
Nom. CI OD Steel OD Part No. Wt.
3" 3.74–4.02 3.500 0062-9502-142 16 lbs
4" 4.74–5.06 4.500 0062-9504-142 25 lbs
6" 6.84–7.16 6.625 0062-9506-142 27 lbs
8" 8.99–9.36 8.625 0062-0508-142 36 lbs
12" 13.14–13.56 12.750 0062-0510-142 83 lbs
24" 25.80 24.000 0062-8052-011 162 lbs
All Style 62 fusion bonded epoxy coated. 7" middle ring standard.
Style 360 "All Around" Repair Clamp — Select Sizes
Width Selection

7.5" for point leaks · 12.5" for moderate corrosion · 15"–20" for extended defects · 30" for severe sections. When in doubt, go one size wider.

Nom. Size OD Range (in.) Width 7.5" Part No. Width 12.5" Part No. Width 15" Part No. Width 20" Part No.
2" 2.35–2.63 0360-0235-010 0360-0235-210 0360-0235-310 —
3" 2.97–3.25 0360-0297-010 0360-0297-210 0360-0297-310 —
3" 3.46–3.70 0360-0346-010 0360-0346-210 0360-0346-310 0360-0346-410
3"–4" 3.96–4.25 0360-0396-010 0360-0396-210 0360-0396-310 0360-0396-410
4" 4.45–4.86 0360-0445-010 0360-0445-210 0360-0445-310 0360-0445-410
Larger sizes through 24"+ and 30" wide options available — contact us for complete table
Alloy bolts standard. SS bolts = P.O.A. Suffix: -010 = 7.5", -210 = 12.5", -310 = 15", -410 = 20", -510 = 25", -610 = 30".
Complete Line

All Dresser Products We Carry

Every Dresser Utility Solutions style available through Watermain Supply. Contact us for part numbers and availability on any item below.

Style 31
Line Cap
Steel & C.I. pipe. NOM 2"–16".
Style 38
Bolted Coupling — Regular
Steel pipe. ½"–36". Gr 27/42/365.
Style 39
Insulating/Reducing Coupling
Steel pipe. Dielectric isolation.
Style 40
Bolted Coupling — Long Body
Steel pipe. ½"–36". 12" ring.
Style 41
Collar Leak Clamp
Steel pipe. 6" NOM and larger.
Style 4
Collar Leak Clamp (Small)
Steel pipe. 2" NOM.
Style 60
Bell Joint Clamp
Large NOM 20"+ bell joints.
Style 62
Reducing Coupling
C.I. to steel transition. 3"–24".
Style 65
Compression Fitting
Steel pipe ½"–2". Reg & long.
Style 80
Repair Sleeve with Vent
Tapping vent repair. 3"–12".
Style 88
Coupling (Small)
½"–2" steel pipe. Brass cups.
Style 90
Cast Body Coupling
Steel pipe ¾"–2". Cast body.
Style 91
Service Saddle
Steel pipe. Conductive bonded.
Style 110
Reinforcing Sleeve — Std
Steel pipe rehab. 4"–12".
Style 118
Repair Clamp
Small pipe ½"–2". 3" and 6" wide.
Style 126
Split Sleeve
Steel pipe. 3"–6" NOM.
Style 128
Flange Adapter
AWWA CL D. 4"–36". Steel/C.I.
Style 131
Dismantling Joint
Flanged. 3"–12" NOM.
Style 138
Bolted Coupling — Cast Iron
C.I. & D.I. pipe. 3"–12".
Style 160
Bell Joint Clamp
Cast iron pipe. 4"–12".
Style 220
Reinforcing Sleeve — Heavy
Steel pipe rehab. 2"–8".
Style 360
Repair Clamp "All Around"
Full circle. 2"–24"+. Multi-width.
Style 3038
Replacement Gaskets
Gr 27 & 42. Plain & armored. ½"–24".
Style 65 Gaskets
Insulating Adapter Gaskets
For Style 65 fittings. ½"–2".
Technical FAQ

Common Questions

What's the difference between Style 38 and Style 40?
Style 38 uses a shorter middle ring while Style 40 uses a 12" ring. Style 40 provides greater pull-out resistance and higher moment load capacity. Both use identical follower rings and gaskets.
Can I use Grade 27 gaskets on a gas line?
Yes — Grade 27 Buna S is standard for natural gas distribution piping. However, do not use Grade 27 with LP gas (propane/butane), crude oil, refined petroleum products, or aromatic solvents. Use Grade 42 for those services.
How do I identify the gasket grade in an existing coupling?
Check the part number suffix: -011 = Grade 27, -013 = Armored Grade 27, -081 = Grade 42, -134 = Armored Grade 42, -345 = Grade 365. If unknown, Grade 42 is the safer replacement choice for any petroleum-adjacent service.
What pipe preparation is required for Style 38?
Clean bare metal or intact epoxy in the gasket seating area — minimum 4" from each pipe end. Remove all rust, scale, tar wrapping, mill varnish, and burrs. A smooth surface ensures proper gasket seating.
When should I use Style 220 instead of Style 110?
Specify Style 220 when operating pressure exceeds the Style 110 rating for the pipe size, or when the defect is more severe or the pipe wall is more compromised. Style 220 has a heavier wall for higher-pressure rehabilitation.
Can Style 128 flange adapters be used on plastic pipe?
No — Style 128 is designed for steel and cast/ductile iron pipe only. The elastomeric gasket seals against a rigid pipe OD and cannot accommodate the deflection of plastic pipe under bolt load.
Are armored gaskets required for buried service?
Armored gaskets are required when: (1) pipe surface is rough or corroded; (2) pipe is mechanically cut leaving a rough end; (3) soil is highly corrosive; or (4) over-tightening is a risk. Normal conditions with smooth pipe — plain gaskets are appropriate.
How do I order replacement gaskets for an existing coupling?
Identify the coupling model and cross-reference to the Style 3038 gasket by pipe OD and gasket section dimension. If the model is unknown, measure the gasket section with calipers. Contact sales@watermainsupply.com for cross-reference help.

Ready to Order or Need a Quote?

We stock the complete Dresser line and turn quotes same day. Volume pricing available for utilities, municipalities, and contractors.

sales@watermainsupply.com
📞
281.664.8000Technical Sales Support
📧
sales@watermainsupply.comSame-Day Quote Response
📦
Stocked & Ready to ShipHouston, TX Distribution