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 6145-01-261-5150
NSN 6150-01-587-8983
NSN 7035-00-896-3213
NSN 5985-00-353-6339
NSN 6240-00-140-4184
NSN 6685-01-361-6532
NSN 5855-01-257-2636
NSN 5905-01-573-6752
NSN 5975-00-759-4860
NSN 5935-01-655-0801
NSN 6145-00-117-8861
NSN 6145-01-054-3874