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 2925-01-412-9520
NSN 6620-00-364-6890
NSN 5945-00-905-5353
NSN 6150-01-413-5572
NSN 5915-01-470-6658
NSN 6685-01-227-2219
NSN 7035-01-082-0311
NSN 5905-01-143-5316
NSN 5998-01-649-7791
NSN 5835-01-270-7899
NSN 6220-01-492-9403
NSN 5930-01-026-1241