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 2925-01-338-7126
NSN 6645-01-607-2132
NSN 6645-00-491-3611
NSN 5950-01-319-1691
NSN 6685-00-553-8733
NSN 5960-01-007-6811
NSN 5925-00-058-4564
NSN 5998-00-411-9877
NSN 6110-01-464-5299
NSN 5975-01-451-3927
NSN 5950-00-952-4960
NSN 6320-01-630-7629