J62_197404 RUBBER SEALS FOR HYDRAULIC DISC BRAKE CYLINDERS

Issued

04/01/1974

Features
Scope
Content
This specification describes the performance and part requirements for elastomeric seals used in highway vehicle disc brake calipers. Seals covered by this specification may be the solid section type (square, rectangular, O-ring, etc.) mounted stationary in the cylinder bore or on the movable piston. The specification contains the following major sections:
  1. 1
    Resistance to Fluid at Elevated Temperature—Physical Stability (loose parts in 120 ±2°C (248 ±3.6°F) brake fluid for 70 h).
  2. 2
    Resistance to Fluid at Elevated Temperature—Precipitation Characteristics (loose parts in 120 ±2°C (248 ±3.6°F) brake fluid for 70 h).
  3. 3
    Resistance to Elevated Temperatures in Dry Air (loose parts in 175 ±2°C (347 ±3.6°F) air for 22 h).
  4. 4
    Ambient Temperature Stroking Test (tested in brake assembly for 500,000 cycles to 7.0 ±0.3 MPa (1000 ±50 psi)).
  5. 5
    High Temperature Stroking Test (tested in brake assembly for 70 h (70,000 strokes) at 120 ±2°C (248 ±3.6°F) to 7.0 ±0.3 MPa (1000 ±50 psi)).
  6. 6
    Low Temperature Leakage Test (tested in brake assembly for 120 h at −40-42.8°C (−40-45°F)).
  7. 7
    Cycling Humidity Storage Corrosion Test (tested in brake assembly for 14 days at 95% humidity cycling between 21-46°C (69.8-114.8°F)).
Meta TagsDetails
DOI
https://doi.org/10.4271/J62_197404
Pages
4
Citation
SAE International Technical Standard, RUBBER SEALS FOR HYDRAULIC DISC BRAKE CYLINDERS, SAE Standard J62_197404, Issued April 1974, https://doi.org/10.4271/J62_197404.
Additional Details
Publisher
Published
Apr 1, 1974
Product Code
J62_197404
Content Type
Technical Standard
Status
Issued
Language
English

Revisions