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 5925-01-234-1965
NSN 6130-01-328-6491
NSN 5996-00-960-9245
NSN 5925-01-576-9256
NSN 6220-01-173-7860
NSN 5985-01-330-9443
NSN 6135-01-193-8154
NSN 6610-01-378-4481
NSN 5835-01-382-4592
NSN 2925-00-560-2476
NSN 6145-00-515-6931
NSN 2925-00-987-9595