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 6620-01-098-9866
NSN 6685-01-238-3077
NSN 5960-00-844-3125
NSN 5930-00-067-6751
NSN 5960-01-356-4429
NSN 5915-00-734-4399
NSN 5910-01-193-1497
NSN 5925-01-308-8548
NSN 6220-01-010-6924
NSN 6145-01-392-1146
NSN 5925-00-038-5894
NSN 5895-00-233-7309