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 5935-01-590-5276
NSN 7035-01-005-0694
NSN 6145-00-973-5628
NSN 6620-01-369-5876
NSN 6685-01-501-1312
NSN 5915-00-503-9797
NSN 5920-01-510-2137
NSN 5935-00-145-9422
NSN 5975-01-274-3420
NSN 6135-01-101-5039
NSN 6610-01-091-3702
NSN 6685-01-539-3090