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 5930-00-186-9252
NSN 6220-01-286-2292
NSN 5905-01-502-3106
NSN 6130-01-170-5085
NSN 5930-01-110-1023
NSN 6685-00-805-2671
NSN 5975-00-250-7358
NSN 5905-01-529-1641
NSN 6150-00-856-3060
NSN 5950-00-605-9641
NSN 5910-00-627-4099
NSN 5985-01-169-2145