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 5925-01-263-1968
NSN 5895-01-056-4548
NSN 4140-01-627-6868
NSN 5905-01-054-4086
NSN 5855-00-256-5562
NSN 6240-01-355-4425
NSN 5965-01-323-0501
NSN 5895-00-001-2756
NSN 5985-01-108-7368
NSN 5905-01-432-1157
NSN 7035-01-105-3787
NSN 6110-00-539-9543