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 5855-00-455-6070
NSN 5950-01-559-7648
NSN 6610-00-553-5103
NSN 6240-01-563-9037
NSN 5950-00-323-1680
NSN 5935-01-097-0631
NSN 5925-01-293-0348
NSN 5975-01-230-2948
NSN 6135-00-990-1822
NSN 5996-01-391-0681
NSN 6135-01-354-5535
NSN 5905-00-148-5162