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Model / MPN: AA9227-15640D243 | NSN: 5331-01-092-2039
ITAR Registered seal

A nonmetallic circular item with an aperature, having a solid round cross-section. They are used primarily for sealing. For items with other than round cross section, see packing, preformed. For noncircular items with a round cross-section, see seal, nonmetallic round section and rubber, round section.

Product Details
NATO Stock Number
Sold in multiples of
1 EA
Outside Diameter
4.387 inches
Cross-sectional Height
Between 0.135 inches and 0.143 inches
Center Hole Diameter
Between 4.081 inches and 4.137 inches
End Application
Used on ticonderoga class c (47)
Elongation Percentage
Hardness Rating
80.0 shore durometer a
Rubber fluorosilicone class fq
Solicitation Description Qty UOM Close Date
SPE5E820T7953 Ring O 351 EA 04/09/2020

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AA9227-15640D243 Cross Reference
  • M25988/4-243
  • MIL-R-25988/4