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 5935-01-331-6998
NSN 6130-01-487-4049
NSN 6105-01-220-8601
NSN 6620-01-039-5468
NSN 6135-00-906-0984
NSN 6685-01-131-2812
NSN 5925-00-426-4754
NSN 6110-01-318-2640
NSN 6150-00-798-7004
NSN 5895-01-419-5975
NSN 6645-01-060-5916
NSN 5935-01-254-3836