top of page
ChatGPT Image May 27, 2025 at 07_40_33 PM_edited_edited.jpg

WATER · WASTEWATER · HVAC · GENERAL SERVICE

Rubber-Steel Insert Gaskets

Elastomer bonded to a rigid steel core. Seals at low bolt load, resists blow-out and does not creep like soft rubber gaskets.
 

Gatrix

Low bolt load

Seals lightly bolted and flat-face flanges where hard gaskets cannot reach seating stress.

Blow-out resistant

The steel core holds the elastomer in place under pressure surges and water hammer.

No cold flow

The core limits compression, so bolt load is retained and re-torquing is reduced.

Fast installation

Rigid, flat gasket that does not fold or tear when slid between flanges.

Gatrix

CONSTRUCTION

A steel core with a bonded elastomer seal

  • Steel core: carbon steel [Zinc-Plated] or stainless steel 304 / 316

  • Sealing element: EPDM or NBR, vulcanised to the core

  • Profiles: full face (with bolt holes) or ring inside the bolt circle

  • Traceability: batch number on every gasket

ELASTOMERS

Pick the elastomer for the medium

Elastomer

Temperature range

Suitable for

Not suitable for

EPDM

−40°C to +120°C

Potable and raw water, wastewater, seawater, hot water, glycol

Oils, fuels, hydrocarbons

NBR (nitrile)

−30°C to +100°C

Mineral oils, fuels, hydraulic fluids, natural gas

Ozone and weathering, steam, ketones

Neoprene

−30°C to +100°C

Water, ozone, mild chemicals, and moderate oil exposure.

Strong acids, ketones and hydrocarbons.

FKM Viton

−20°C to +200°C

Oils, fuels, hydrocarbons, acids, chemicals, ozone, and HT Apps.

Ketones, ethers and certain amines.

SPECIFICATIONS

Technical data

Custom sizes and drillings made to drawing.

Nominal sizes

NPS 2" to 100" / DN 50 to 2500

Flange drillings

ASME B16.5, ASME B16.47, EN 1092-1

Maximum pressure

580 psi / 40 bar

Thickness

3.0mm or 6.4mm

Elastomer hardness

70 ± 5 Shore A

Gasket design data (EN 13555)

[AVAILABLE ON REQUEST, ONCE TESTED]

Drinking water approval

FDA Certificate

CALCULATOR

Online Bolt Tightening Torque calculator tool

Check our online tool for bolt tightening torque values of the Rubber-Steel Insert Gaskets.

Downloads

PDF . CATALOG​
Rubber-Steel Gasket Datasheet

PDF . GUIDE​
RSG Installation Guide

PDF . TABLE​
Gasket Torque Table

Need gaskets for a project?

Send size, drilling, medium and quantity. We reply within 48 business hours.

bottom of page