Rubber and Synthetic Rubber Gaskets

Shop all Rubber and Synthetic Rubber Gaskets

 

Important: If you have any uncertainties about what material to use, just call us! We have employees that have been selling gaskets and servicing gasket applications for decades. We have sold gaskets in over 100 different materials!  What follows below are generalizations for different categories of gasket materials.  Use the information below only as a general guideline, and not as advice for your specific application.   

 

Rubber and Synthetic Rubbers: Rubber and synthetic rubber gaskets are some of the most common materials used in gasket applications. This is due to their inherent properties as elastomers. They typically, bend, stretch, twist, flex and conform to other shapes easily. This makes them a very good options to fill up the nooks and crannies between the two uneven surfaces (flanges) we are trying to seal. Rubbers, however, can face significant limitations in certain situations where temperatures become too cold (or hot) or if it comes in contact materials that don't play well with rubber.  Moreover, in some cases, if materials are too soft, creep relaxation can lead to a lack of load or force (compression) from bolts and ultimately a lack of seal.

 

Material General Temperature Range Tensile Strength (psi) Positive Attributes Drawbacks Things To Avoid
Red Rubber (SBR) -30°F to +150°F 600 Inexpensive, good for hot or cold water, good strength, resistant to ketones Not for use in applications coming into contact with hydrocarbons, not as resistant to sunlight Avoid solvents, fuels, oils, hydraulic fluids
EPDM -40°F to +220°F 1100 Inexpensive, multiple hardness ratings, resistance to sunlight, oxygen, and acids Not for use in applications coming into contact with hydrocarbons Avoid fuels and oils
Buna (Nitrile or NBR) -30°F to +200°F 1000 Good conformability, resistance to oils, fuels and hydrocarbons, relatively inexpensive Single hardness rating, not as resistant to sunlight as EPDM, poor flame resistance Avoid ethers, ketones and amines, many acids
Neoprene -20°F to +170°F 900 Great conformability, good resistance to sunlight, multiple hardness ratings, very good impact resistance, good flame resistance Susceptible to acid attack Avoid ketones, chlorine, many acids
Viton® (FKM) -15°F / 450°F 1000 Good for fuel oils, hydrocarbons, resistant to sunlight, higher service temperatures More expensive than other synthetic rubbers, other rubbers can withstand slightly colder temperatures Avoid ketones and solvents

 

 

Common Materials (Available Online) All Materials We Carry (call for items not sold online) - Alphabetical by Material Class
Rubbers and Synthetic Rubbers Rubbers and Synthetic Rubbers

Red Rubber

EPDM

Viton

Neoprene

Buna-N

BUNA (NBR)

BUNA (PREMIUM GRADE)

BUNA CLOTH INSERT

BUNA DIAPHRAGM

BUTYL

EPDM

EPDM (80 DURO)

FDA BUNA

FDA BUNA (80 DURO)

FDA EPDM

FDA EPDM (80 DURO)

FDA RED SILICONE (80 DURO)

FDA VITON

GARLOCK® 7797 (Premium Grade Neoprene)

GARLOCK® 7986 (Neoprene)

GARLOCK® 8314 (Premium Grade EPDM)

GARLOCK® 9122 (NBR Rubber)

GARLOCK® 98206 (EPDM / NSF 61 Potable Water)

GUM RUBBER

NEOPRENE

NEOPRENE 40 DURO 

NEOPRENE 50 DURO

NEOPRENE 70 DURO

NEOPRENE 80 DURO

NEOPRENE CLOTH INSERT

RED RUBBER

RED SILICONE

RED URETHANE (60 DURO)

SBR (BLACK)

SBR CLOTH INSERT

VITON

VITON "B"