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 6220-01-441-2889
NSN 5965-01-058-6285
NSN 6240-00-551-3144
NSN 6685-01-044-5044
NSN 5855-01-461-7726
NSN 6220-01-425-4429
NSN 6150-01-335-6615
NSN 5905-01-089-7897
NSN 5835-01-610-5744
NSN 2925-00-580-4931
NSN 6320-01-466-4175
NSN 6220-01-537-8629