A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5905-00-764-1177
NSN 5835-00-792-8438
NSN 4140-01-284-6485
NSN 6130-01-139-3701
NSN 5999-01-392-7840
NSN 5996-01-268-5206
NSN 5935-01-536-1473
NSN 5985-00-174-3572
NSN 6320-00-483-0451
NSN 5925-01-456-5853
NSN 5935-01-578-8096
NSN 7035-01-026-1171