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 5996-01-495-0763
NSN 6110-01-167-7939
NSN 6110-00-686-1530
NSN 2925-00-833-9466
NSN 7035-01-183-1989
NSN 5950-01-551-3485
NSN 5975-01-009-8636
NSN 6685-01-140-2759
NSN 6145-00-204-5992
NSN 4140-00-442-6373
NSN 6145-01-313-9886
NSN 5999-00-679-3939