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 2925-01-274-8576
NSN 6610-00-342-0699
NSN 5835-00-235-2950
NSN 5905-00-167-1693
NSN 6685-00-118-3625
NSN 5960-00-062-4906
NSN 4140-01-367-2547
NSN 5915-01-243-1100
NSN 5855-00-688-9954
NSN 5925-01-460-8587
NSN 6320-01-359-3921
NSN 6135-01-377-5729