Butyl 70 Durometer O-Ring, General Purpose (B0318-70 GP) | Parker NA
687519
687519

Butyl 70 Durometer O-Ring, General Purpose (B0318-70 GP)

Parker's butyl rubber (IIR) O-rings are compatible with solvents and other chemicals.

Use our configurator to build the right part for your application.
Product Overview
Description
    Parker's Butyl (isobutylene, isoprene rubber, IIR) has a very low permeability rate and good electrical properties.

    • Heat resistance
    • Up to approximately 121°C (250°F)
    • Cold flexibility
    • Down to approximately -59°C (-75°F )
    • Chemical resistance
    • Hot water and steam up to 121°C (250°F)
    • Brake fluids with glycol base (Dot 3 & 4)
    • Many acids (see Fluid Compatibility Tables in
    Section VII)
    • Salt solutions
    • Polar solvents, (e.g. alcohols, ketones and esters)
    • Poly-glycol based hydraulic fluids (HFC fluids) and
    phosphate-ester bases (HFD-R fluids)
    • Silicone oil and grease
    • Ozone, aging and weather resistant

    Not compatible with:
    • Mineral oil and grease
    • Fuels
    • Chlorinated hydrocarbons

    *Custom sizes and coatings/markings are available upon request. Contact Parker O-Ring Division at 859-269-2351 for design and pricing assistance.
Tech Specifications
Description

Performance Characteristics

Polymer Material Options

Butyl Rubber (IIR)

Minimum Operating Temperature

-75 °F

Maximum Operating Temperature

250 °F

For Fluid Type

Synthetic Hydraulic Fluids

Industry

General

Durometer

70 Shore A

Specifications Met

MIL/Aero
AMS3238

Region of Origin

North America

Internally Lubricated

No

Color

Black

Thermal Application Type

Low Temperature (< -30°F)

Product Support

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