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 5905-01-474-9849
NSN 5985-01-463-7225
NSN 5965-00-906-1442
NSN 6135-01-268-2152
NSN 6610-01-039-9295
NSN 5965-00-492-9642
NSN 6610-01-258-6726
NSN 6220-01-479-4015
NSN 5999-01-281-7525
NSN 6145-00-508-4710
NSN 2925-01-074-2718
NSN 5998-00-878-2012