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 6220-01-519-2252
NSN 6130-00-865-3306
NSN 5990-01-584-6213
NSN 6685-01-656-2986
NSN 5935-01-265-4271
NSN 5920-01-445-4767
NSN 5985-01-525-2418
NSN 6110-01-397-8803
NSN 6145-01-197-8206
NSN 6105-01-448-9380
NSN 5925-01-330-6518
NSN 5930-01-056-4091