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 6685-00-460-8761
NSN 5975-00-214-0511
NSN 5960-01-425-1454
NSN 5905-00-966-9069
NSN 5935-00-276-9399
NSN 5965-00-153-5216
NSN 6320-01-227-2648
NSN 5905-00-952-2455
NSN 4140-00-111-3247
NSN 5920-00-482-0896
NSN 5998-01-114-8042
NSN 5855-01-180-5369