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 6320-01-406-8942
NSN 5855-00-949-8143
NSN 6685-01-474-6470
NSN 5920-01-173-1750
NSN 6645-00-439-4087
NSN 5945-01-220-2271
NSN 5998-00-067-4316
NSN 5998-01-476-7129
NSN 2925-00-520-9546
NSN 5965-00-026-9408
NSN 6320-01-294-7161
NSN 6240-01-361-3499