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Technical Data Sheet
58951 ✓ Verified by PartsTable
Bestway · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

Keep your pool pristine when it's not in use all year long with the Bestway Round Premium Pool Cover. Above ground pool covers are a must-have accessory; they keep debris, leaves and trash from getting in the water, and reduce the amount of chemicals you need to use to keep your water in tip-top shape. Featuring a wind-resistant tightening mechanism, you can fit the pool cover to the exact size of your pool and rest assured the cover will stay in place through most weather conditions.

With Polar-Shield enhancements, the pool cover can be used all year long, in temperatures down to -25ºC (-13ºF). This pool accessory features drain holes to prevent the accumulation of water and stretching from the strain of the weight. This cover is the perfect accessory for a Bestway 4.57 m (15 ft.) round frame pool.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-169-3171, indicating validated use in U.S. government and defense logistics supply chains.

WHERE IT FITS
58951
NSN: 5331-01-169-3171
FSC: 5331 — O-RING
CAGE: 08302 — PACCAR WINCH INC DBA PACCAR WINCH DIVISION (USA)
SPECIFICATIONS
Part Number58951
ManufacturerBestway
NSN5331-01-169-3171
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 58951 MFR: Bestway ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
217681Interchangeable
interchangeable cross-reference
interchangeable
304049C1Interchangeable
interchangeable cross-reference
interchangeable
UCL13-5867-1Interchangeable
interchangeable cross-reference
interchangeable
D74882Interchangeable
interchangeable cross-reference
interchangeable
2774-0113Interchangeable
interchangeable cross-reference
interchangeable
474821-3Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 58951?
58951 is a O-RING manufactured by Bestway.
What parts can replace 58951?
There are 15 known substitutes for 58951: 217681, 304049C1, UCL13-5867-1 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 58951?
58951 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-169-3171. This indicates validated use in U.S. government and defense supply chains.
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