Accession Number : AD0270746

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

Corporate Author : MARE ISLAND NAVAL SHIPYARD VALLEJO CALIF RUBBER LAB

Personal Author(s) : FORD,R.D.

Report Date : 29 NOV 1961

Pagination or Media Count : 1

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 times/min in a vertical cylinder o 2.63-in. internal diameter. The piston travel is 1-1/2 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)

Descriptors :   *HYDRAULIC SEALS, *HYDRAULIC EQUIPMENT, *RUBBER SEALS, HYDRAULIC FLUIDS, OIL SEALS, ORGANIC COMPOUNDS, PETROLEUM PRODUCTS, PHOSPHATES, POLYMERS, SYNTHETIC RUBBER, TEST METHODS

Distribution Statement : APPROVED FOR PUBLIC RELEASE