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 6135-01-432-1002
NSN 6685-01-530-9269
NSN 5998-01-168-2753
NSN 5996-01-318-0646
NSN 6685-01-146-3560
NSN 6650-01-181-6037
NSN 5905-01-651-4851
NSN 6650-01-170-0852
NSN 5945-00-935-5266
NSN 2925-00-523-7096
NSN 5998-00-031-3665
NSN 5998-01-297-1749