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 5975-01-505-0800
NSN 5975-00-293-8166
NSN 2925-01-236-3547
NSN 6220-00-157-5009
NSN 6150-01-400-1297
NSN 4140-00-170-1567
NSN 6320-01-600-5808
NSN 6130-01-434-4987
NSN 5920-01-571-8583
NSN 5915-01-183-1841
NSN 6240-01-375-6119
NSN 5855-01-407-8706