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

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

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

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

Technical Specifications

  • 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)

Full Product 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.

Related Documents

Literature and Reference Materials
Aerospace Reference Guide--5800
Parker O-Ring Handbook --ORD 5700
Parker O-Ring Material Offering Guide--5712
Parker O-Ring eHandbook
Parker O-Ring eHandbook
Parker Tracking System and RFID Technology
Technical Glossary
Compound Shrink Class
Diagnosing damaged O-rings
O-Ring Division Frequently Asked Questions
VIDEO: How to lubricate an O-ring
VIDEO: Proper installation of an O-ring Face Seals
VIDEO: Proper installation of an O-ring Female Radial Seal
VIDEO: Proper installation of an O-ring: Dovetails
VIDEO: Proper installation of an O-ring: Male Radial
Training
Basic Technical Glossary -- seal technology training
Introduction to Sealing -- seal technology training
Seal Failure Modes: Diagnosis and Solutions--Webinar
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O-Ring Material Test Reports
RoHS Compliance
B0318 Material Test Report
EMG OES Regulatory Declarations, Compliance & Safety Data Sheets (SDS) library
How to read a test report
Parker SDS O-ring and rubber materials
Prop 65 General Statement
Shelf Life
Software Downloads
Mobile inPHorm app
Selector Guides
O-Ring Selector Tool (Imperial units)
Healthcare and Life Sciences Solutions - Medical Devices Manufacturing Products
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