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 2925-00-461-4954
NSN 5920-01-068-1483
NSN 5835-00-949-3018
NSN 6610-01-169-9491
NSN 5910-00-763-6943
NSN 6150-01-429-8315
NSN 5999-00-081-9168
NSN 7035-01-045-7202
NSN 6150-00-875-9256
NSN 2925-01-026-1000
NSN 5990-01-027-0568
NSN 6220-00-379-4044