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 5965-01-575-8900
NSN 6145-00-768-1956
NSN 5985-01-578-6915
NSN 6620-00-225-1475
NSN 2925-01-293-6266
NSN 6645-01-071-0727
NSN 5975-00-715-1563
NSN 5925-00-150-1072
NSN 6240-01-374-1904
NSN 5905-01-593-6444
NSN 7035-00-108-4421
NSN 5915-01-442-9231