Dresser Style 4 and 41 collar clamp gasket
Dresser Style 4 & 41 Gasket dimension drawing
Dresser Style 4 & 41 Gasket specification table
Dresser Style 4 & 41 Gasket specification table
Dresser Style 4 & 41 Gasket specification table
Dresser Style 4 & 41 Gasket specification table
Dresser Style 4 and 41 collar clamp gasket
Dresser Style 4 & 41 Gasket dimension drawing
Dresser Style 4 & 41 Gasket specification table
Dresser Style 4 & 41 Gasket specification table
Dresser Style 4 & 41 Gasket specification table
Dresser Style 4 & 41 Gasket specification table

Dresser Style 4 & 41 Gasket - Collar Leak Clamps

Nominal Size - OD: 3 in - 3.50 in OD
Clamp - Part No.: Style 4 - 3004-0007-001

Product variant with selected options does not exist!
$63.03
SKU: 3004-0007-001
Weight : 0.5 lb
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Description
Dresser · Clamp Gasket
Style 4 and 41 Collar Clamp Gasket
Split rectangular gaskets for Style 4 (2 to 4 in) and Style 41 (6 to 12 in) collar leak clamps.
212°F Max
Grade 27 Buna-S
Split Rectangular Section
For Style 4 and 41 Clamps
3.50-10.75 in Pipe OD
0.5-2 lb Weight
Overview

Replacement split gaskets for Dresser Style 4 and 41 collar leak clamps, which stop leaks through the threads of screw collars. The split design goes on without disconnecting the line.

Application: Re-gasketing Style 4 and 41 collar clamps on steel lines.

  • Split rectangular section
  • Style 4 sizes 3 and 4 in; Style 41 sizes 6, 8 and 10 in
What Ships and What It Needs to Run

Included: one split gasket per part number.

Coupling or fitting parts, by others: followers, bolts and middle rings are not included unless named in the option.

Genuine Dresser equipment, factory-new in original packaging — sold and supported by Watermain Supply, an independent industrial supplier.
12-Month Dresser Warranty

Covered for 12 months from the date of purchase under Dresser’s published warranty terms.

Specifications
Material SBR Buna-S, Grade 27
Max temperature 212°F

Dresser gasket grade overview and Grade 27 submittal, 2021.

Gasket Grades
Grade Rubber Max temperature Max pressure Mold code
27 SBR Buna-S 212°F Per coupling rating White
41 Natural 212°F Per coupling rating Dark green
42 Buna-N nitrile 212°F Per coupling rating Yellow
224 Fluorocarbon (Viton) 350°F 100 PSI Brown/tan
365 Graphite fiber 1,200°F None (may not seal leak-tight) —

Dresser gasket grade overview, 2021. In Style 65, 88 and 90 compression fittings the maximum is 150°F.

Storage: Dresser rubber gaskets keep five years or more on the shelf stored cool (32 to 80°F), dark and away from ozone, sunlight and weather, lying in their normal ID-OD position with nothing stacked on them.

Sizes
Nominal Size - OD Clamp
3 in - 3.50 in OD Style 4
4 in - 4.50 in OD Style 4
10 in - 10.75 in OD Style 41
6 in - 6.63 in OD Style 41
8 in - 8.63 in OD Style 41

Sizes as listed in Dresser’s 2026 price lists; the picker shows the part number for each build.

Before You Order. Match the pipe OD and the gasket section to the coupling or fitting; the part number is on the old gasket and in the coupling submittal. Non-stock Dresser parts are not returnable without Dresser’s authorization, and ship time is confirmed when you order. Custom builds (other sizes, widths, gaskets or materials) are available: email sales@watermainsupply.com with the pipe OD, material and line content.
For engineering-led sizing and selection support or a factory submittal, email sales@watermainsupply.com or call 1-888.510.4036.
© Watermain Supply — A division of E4 Industrial LLC
Data Sheet
Gasket Grade Overview (2021) Water Repair Products Catalog Gasket Shelf Life and Storage Bulletin
Videos

Product videos are being added to this listing. For a walkthrough in the meantime, email sales@watermainsupply.com.

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