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 6240-01-036-4073
NSN 5950-01-220-4515
NSN 5998-01-022-2655
NSN 6130-00-709-0765
NSN 6645-00-425-6199
NSN 5920-00-170-4247
NSN 5905-01-499-5861
NSN 5930-00-314-5137
NSN 5960-01-252-8821
NSN 6240-01-415-3014
NSN 6610-00-263-3076
NSN 5835-01-436-6549