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 5996-01-574-8853
NSN 5835-01-119-8561
NSN 5999-01-542-9318
NSN 5910-01-163-3130
NSN 5855-01-656-6808
NSN 6320-01-250-0290
NSN 5905-01-380-1666
NSN 6685-01-225-3238
NSN 6650-01-371-5886
NSN 5975-01-261-2995
NSN 5975-01-561-7772
NSN 5925-00-536-7651