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 5915-01-126-6517
NSN 6150-00-666-3635
NSN 6145-01-146-4106
NSN 6135-00-170-8819
NSN 6685-00-941-5718
NSN 5895-00-262-4331
NSN 5915-01-387-5302
NSN 6645-01-487-4341
NSN 5855-01-393-2455
NSN 6150-01-657-3398
NSN 5835-00-016-3671
NSN 2925-00-459-4519