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 6220-01-224-7676
NSN 5960-01-272-5642
NSN 5910-01-418-0991
NSN 5925-01-549-0936
NSN 5985-00-209-2591
NSN 5930-00-606-0195
NSN 5835-01-100-3265
NSN 5998-00-911-8394
NSN 5855-00-221-9435
NSN 5990-01-333-2294
NSN 6620-01-275-9777
NSN 5975-01-106-3595