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 5835-01-395-7976
NSN 5925-00-052-7771
NSN 5935-00-905-9710
NSN 6220-01-063-9543
NSN 4140-01-555-8190
NSN 7035-01-305-1950
NSN 6105-01-146-5749
NSN 6240-01-441-3606
NSN 5960-01-392-4786
NSN 4140-01-171-0175
NSN 6685-01-054-1450
NSN 6110-01-190-5512