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 2925-01-311-0446
NSN 6320-00-300-5556
NSN 6135-01-386-5709
NSN 5855-01-199-0150
NSN 5930-01-097-4530
NSN 5925-01-297-3995
NSN 5965-01-250-5768
NSN 6150-01-586-5219
NSN 5975-00-541-8531
NSN 5996-01-275-0706
NSN 5998-00-820-5320
NSN 5895-01-634-0630