JCM 920 Pipe Diameter Tape

JCM Replacement Gaskets and Tools

JCM Industries replacement gaskets and tools: G212 self-centering transition gaskets for JCM 210, 211, 212, 214 and 262 couplings and 301 and 306 flanged coupling adapters (NSF/ANSI 61 and 372), 225 insulating adapter gaskets for IPS-to-copper connections, and the 920 pipe diameter tape that reads OD in 100ths of an inch. Send the coupling part number and pipe ODs and we will name the gasket. Call 1-888.510.4036.

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JCM 920 Pipe Diameter Tape - OD Tape for Clamp and Coupling Sizing
JCM 920 Pipe Diameter Tape - product photo

JCM Industries

Free Shipping $499 or more

JCM 920 Pipe Diameter Tape - OD Tape for Clamp and Coupling Sizing

$30.42
JCM 225 Insulating Adapter Gasket - IPS to Copper Tube Size, 1/2 to 2 in
JCM 225 Insulating Adapter Gasket - IPS to Copper Tube Size, 1/2 to 2 in

JCM Industries

Free Shipping $499 or more

JCM 225 Insulating Adapter Gasket - IPS to Copper Tube Size, 1/2 to 2 in

From $14.19
JCM G212 Transition Gasket for Ductile Iron Couplings - 2 to 12 in
JCM 210 Ductile Iron Coupling - the coupling the G212 transition gasket fits

JCM Industries

Free Shipping $499 or more

JCM G212 Transition Gasket for Ductile Iron Couplings - 2 to 12 in

From $8

JCM Replacement Gaskets and Tools

JCM Industries · Gaskets and Tools

JCM Replacement Gaskets and Tools

The parts that keep a JCM job moving: G212 transition gaskets for JCM ductile iron couplings and flanged coupling adapters, 225 insulating adapter gaskets, and the 920 pipe diameter tape that sizes every clamp, coupling, saddle and sleeve.

JCM 920 Pipe Diameter Tape
37 GasketsG212 sizes 2-12 in
NSF/ANSI 61 and 372G212
6 Sizes225, 1/2-2 in
100ths920 reads OD directly

JCM ductile iron couplings and flanged coupling adapters use self-centering, extra-wide transition gaskets: stock one coupling body and change only the gaskets to join A/C, cast iron, ductile iron, steel and PVC. These listings carry those gaskets, the 225 insulating adapter gaskets and the 920 tape.

Watermain Supply supplies JCM gaskets and tools with the fittings they serve. Send the coupling part number and the pipe OD at each end and we will name the gaskets. Email sales@watermainsupply.com or call 1-888.510.4036. Genuine JCM Industries equipment, factory-new in original packaging — sold and supported by Watermain Supply, an independent industrial supplier.

JCM Gaskets and Tools

G212 Transition Gaskets

For 210, 211, 212, 214, 262, 301, 306

2-12 inNominal
37Gaskets
NSF 61/372Certified
OversizedA/C sleeves

Pick the coupling sleeve (the four-digit number in the coupling part number, for example 210-0690 takes 690 gaskets), then the gasket for the pipe OD at that end. Same gasket both ends makes a straight coupling.

  • Self-centering, extra-wide profile
  • Standard and oversized sleeves
  • Two per straight coupling
Best for transitions between pipe materials and gasket replacement.
G212 Gaskets

225 Insulating Adapter Gaskets

IPS to copper tube size

1/2-2 inSizes
IPS x CTAdapter
DielectricInsulation
220Compression coupling

Adapt iron pipe size compression fittings to copper tube size, and insulate between dissimilar metals to prevent galvanic corrosion.

  • Six sizes, 1/2 IP x 1/2 CT to 2 IP x 2 CT
  • Pairs with the JCM 220
  • Stops galvanic corrosion
Best for copper services on IPS fittings.
225 Gaskets
JCM 920 Pipe Diameter Tape

920 Pipe Diameter Tape

Sizing tool

100thsDiameter scale
InchesOn the reverse
Any pipeOD or circumference
1Tape

Reads pipe diameter directly in 100ths of an inch, with standard inches on the reverse: the tool for choosing the right OD range on clamps, couplings, saddles and tapping sleeves.

  • Reads OD without math
  • Measures circumference too
  • One tool for every range
Best for every crew that orders repair fittings.
JCM 920

Warranty

Warranty

12 months from the date of purchase against defects in materials and workmanship (Watermain Supply standard). Keep the dated invoice.

Fit

Gaskets are specific to the coupling they fit: match the sleeve size in the coupling part number and the pipe OD at each end.

Size It Now

Send the coupling part number and pipe ODs.

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G212 Gasket Guide

Sleeve size first, then the pipe OD at each end.

Nominal Coupling sleeve Standard gasket Reducing gaskets
2 to 2-1/2 in 288 2.62-2.92 in CI, 2-1/2 in PVC, steel 2.38-2.50 in
3 in 396 3.80-4.17 in CI, DI, A/C 150, C900 3.50 in IPS PVC, steel
4 in 480 4.74-5.10 in CI, DI, A/C 150, C900 4.50 IPS / 4.22 SDR 35 / 4.00 tubing
6 in 690 6.84-7.26 in CI, DI, A/C 150, C900 6.63 IPS / 6.30 SDR 35 / 6.00 tubing
8 in 905 8.99-9.42 in CI, DI, A/C 150, C900 8.63 IPS / 8.40 SDR 35 / 8.00 tubing
10 in 1110 11.04-11.40 in CI, DI, C900 10.75 IPS / 10.50 SDR 35
12 in 1320 13.14-13.50 in CI, DI, C900 12.75 IPS / 12.50 SDR 35
4-12 in oversized 535, 740, 967, 1200, 1420 A/C CI, DI, C900 and IPS reducing gaskets

From the JCM transition gasket tables. The 288-0238 and 396-0350 gaskets have no extended lip (JCM note).

Equivalents on Our Site

Gaskets are specific to the coupling they fit; order the gasket made for your coupling.

JCM Smith-Blair Dresser Note
JCM G212 Smith-Blair OMNI coupling gasket Dresser Style 138 gasket, Grade 27 gasket Each fits its own maker's coupling
JCM 225 Smith-Blair copper tubing adapter gasket Dresser Style 65 gaskets (incl. IPS x CTS) Chart: Dresser 3065

Why Buy JCM From Watermain Supply

Engineering-led selection

Send the measured OD, pipe material, damage and pressure. We name the style, range and width, and we obtain JCM's rating and a submittal when the job needs one.

Three brands, one honest answer

We sell JCM, Smith-Blair and Dresser side by side. If another style fits your pipe better, we will say so and quote it.

Every part on one order

Clamps, couplings, saddles, tapping sleeves, restraints and gaskets on one PO, with account terms for utilities and contractors.

Parts and aftermarket

JCM transition gaskets, OD tapes and replacement parts listed alongside the fittings, so the job does not stall on a gasket.

Odd sizes handled

JCM builds special ranges, widths, outlets and materials to order. We handle the request and the submittal for you.

Houston based, Gulf Coast service

Watermain Supply is based in Houston and serves utilities, contractors and plants across the Gulf Coast and nationwide.

Frequently Asked Questions

Which G212 gasket do I need?

Find the sleeve size in your coupling part number (210-0690 is a 690 sleeve), then choose the gasket for the pipe OD at that end. Use two of the same gasket for a straight coupling.

Which couplings take G212 gaskets?

JCM names the 210, 211, 212, 214 and 262 couplings and the 301 and 306 flanged coupling adapters.

Are G212 gaskets NSF certified?

Yes. JCM certifies its transition gaskets to NSF/ANSI 61 Annex G and NSF/ANSI 372.

What is the 225 gasket for?

It adapts an IPS compression fitting such as the JCM 220 to copper tube size and insulates the dissimilar metals against galvanic corrosion.

Why buy the 920 tape?

It reads pipe OD directly in 100ths of an inch, which is how repair clamps, couplings, saddles and tapping sleeves are sized.

Need the Right Gasket?

Send the coupling part number and the pipe OD at each end.

1-888.510.4036Email SalesRequest a Quote
Technical data on this page is taken from JCM Industries product literature and is subject to change by the manufacturer. Confirm against the current installation instructions before specifying.
JCM Industries and Sur-Grip are trademarks of JCM Industries, Inc.; Smith-Blair, Dresser, Ford, Romac, PowerSeal, Cascade, Robar and Mueller are trademarks of their respective owners, used here for product identification only. Cross-reference equivalents are by function; ranges, ratings and materials differ.
Watermain Supply is a DBA of E4 Industrial LLC, an independent industrial supplier based in Houston, Texas.