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 5895-01-348-8855
NSN 5965-01-204-1423
NSN 5975-01-369-4658
NSN 6685-01-311-5435
NSN 5915-01-627-3235
NSN 5985-00-082-3989
NSN 6620-01-069-8594
NSN 5990-01-517-7848
NSN 5996-01-168-7148
NSN 6320-00-098-2858
NSN 5945-00-456-1758
NSN 5975-00-915-0530