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 6105-00-407-1232
NSN 5905-01-364-9156
NSN 5920-00-182-9948
NSN 5855-01-432-4401
NSN 6105-00-186-9380
NSN 6220-01-578-1424
NSN 5985-01-240-5071
NSN 6685-00-629-5240
NSN 6105-01-323-4695
NSN 4140-01-011-0168
NSN 5998-00-079-0199
NSN 5930-01-432-1688