British Manufacturer

Flange Gaskets

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Key Features

  • Available in a wide range of materials
  • Seal space between two sections of pipe
  • Good ozone, weathering and UV resistant
  • CNC gasket cutting technology


Product Description

The Rubber Company can manufacture flange gaskets to any standard table size using in house CNC gasket cutting technology. Gaskets can be cut from various sheet materials held in stock. Please download our flange gasket datasheets for the flange type you require. For information on how to measure a gasket, please see our guide.

Flange gaskets are generally the most common type of gasket and the one that most people will generally think of. The are almost always circular in shape and are available with or without bolt holes depending on the requirement.

Perhaps two of the most crucial dimensions for a flange gasket. The inner (ID) and out (OD) diameters ensure that the gasket will fit correctly in your application. The best way to get these measurements is to use either a tape measure or a ruler. Simply place the measuring tool edge to edge over the gasket face and note the measurements accordingly.

As many flange gaskets also feature bolt holes it is important to accurately measure the gap between opposite holes. Depending on the size of the gasket the best measuring tool to use is a digital calliper as this will give the most accurate reading. You can also use a tape measure or ruler however. To calculate the pitch circle diameter (PCD) you need to measure from the inside of one hole to the inside of the opposite hole. Please note, this method only works assuming both hole diameters are equal.

how to measure a gasket

Gasket Tables for DIN Standard Flanges

PN6 PN10 PN16 PN25 PN40

Gasket Tables for BS10 Flanges (Table)

Table A Table D Table E Table F Table H Table J Table K

Gasket Tables for ANSI B16.5 Standard Flanges (ASA)

The standard ANSI/ASA flange gasket tables are shown below for flange sizes up to 24″

ASME B16.21 Class ASA 150 ASME B16.21 Class ASA 300 ASME B16.21 Class ASA 600

If the flange size required is greater than 24″ please select the flange type ‘Class A’ or ‘Class B’ below.

ASME B16.47 A Class 150 ASME B16.47 A Class 300 ASME B16.47 A Class 600 ASME B16.47 B Class 150 ASME B16.47 B Class 300 ASME B16.47 B Class 600

  • Fast Lead Times On Standard and Bespoke Manufactured Parts.

We provide a comprehensive selection of gasket materials offered in rolls, sheets, or precisely cut components. Our stock includes standard materials ready for same-day dispatch, while non-standard parts can be swiftly fabricated using our advanced CNC cutting machines. Our team of experts is on hand to offer guidance in choosing the ideal product for your specific application.

Common Materials

  • Butyl
  • EPDM
  • Natural Rubber
  • Neoprene
  • Nitrile
  • Silicone
  • Sponge Rubber
  • Tico
  • FKM (Viton)

Potential Industries

  • Aerospace
  • Automotive
  • Construction
  • Electrical
  • Energy Generation
  • Food & Beverage
  • Marine
  • Pharmaceutical
  • Oil & Gas
  • Transportation
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