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 5999-01-111-8781
NSN 6220-01-444-4245
NSN 5935-01-614-4148
NSN 6620-01-266-8894
NSN 6645-00-544-8529
NSN 6145-01-159-8001
NSN 6685-01-324-8574
NSN 5920-01-206-0191
NSN 5990-01-448-2751
NSN 2925-01-437-9041
NSN 6130-01-025-3815
NSN 5905-00-208-4789