Accession Number:

AD0270746

Title:

SUITABILITY OF VITON B O-RINGS FOR USE IN 3000 PSI HYDRAULIC SYSTEMS CONTAINING PETROLEUM BASE FLUID OR CELLULUBE 220

Descriptive Note:

Corporate Author:

MARE ISLAND NAVAL SHIPYARD VALLEJO CALIF RUBBER LAB

Personal Author(s):

Report Date:

1961-11-29

Pagination or Media Count:

1.0

Abstract:

Efforts were made to develop a performance test for Viton O-rings to be used in 3000 psi hydraulic service. The service fluid may be either petroleum base or Cellulube 220. The test apparatus consisted of a piston with two O-rings which reciprocates 100 timesmin in a vertical cylinder o 2.63-in. internal diameter. The piston travel is 1-12 in. The cylinder is held at 160 F. Teflon back-up rings are used on the downstream side of the O-rings. The pressure-on cycle lasts for 9 min the pressure-off cycle lasts for 1 min. Leakage at both ends of the piston is collected. Difficulty was experienced in obtaining reproducible results with this equipment when the criterion was time required for a definite leakage 20 cc to occur at 3000 psi fluid pressure. The test results show that Viton O-rings seal Cellulube 220 satisfactorily under these conditions and are not damaged by this treatment. The investigation is being continued wit the criterion changed t the number of cycles before the leakage in a 24-hr period exceeds 15 cc for either O-ring. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE