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 6135-00-235-1938
NSN 5925-00-100-0102
NSN 5975-01-386-3061
NSN 5960-01-138-0684
NSN 5930-01-012-1939
NSN 5905-01-102-6399
NSN 6135-01-633-8502
NSN 4140-01-319-7068
NSN 6685-01-152-2846
NSN 6610-01-010-4516
NSN 5895-01-189-8970
NSN 5999-01-576-2293