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 5905-00-518-8923
NSN 5905-00-576-9077
NSN 5895-01-176-1237
NSN 5950-01-369-0230
NSN 5996-01-391-8853
NSN 5950-00-788-4961
NSN 6610-01-175-9045
NSN 5930-01-165-7156
NSN 5999-01-023-1224
NSN 5925-01-323-6491
NSN 5985-01-548-4061
NSN 6145-00-275-4046