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PWA50311-3 — PROTECTOR,FLANGE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

PWA50311-3: PROTECTOR,FLANGE.

The PROTECTOR,FLANGE is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 6061, inside_diameter: 3.442 INCHES MINIMUM AND 3.451 INCHES MAXIMUM IN, overall_diameter: 4.000 INCHES NOMINAL IN, special_features: ITEM IS ANODIZED PER AMS 2470 AND IS 1.000 IN. HIGH; 3.500-16 UN THD IN.

This part is cataloged in the U.S. Government catalog under NSN 5340-01-121-6957, indicating validated use in U.S. government and defense logistics supply chains.

Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
PWA50311-3
NSN: 5340-01-121-6957
FSC: 5340 — Hardware, Commercial
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 6061
inside_diameter3.442 INCHES MINIMUM AND 3.451 INCHES MAXIMUM IN
overall_diameter4.000 INCHES NOMINAL IN
special_featuresITEM IS ANODIZED PER AMS 2470 AND IS 1.000 IN. HIGH; 3.500-16 UN THD IN
NSN5340-01-121-6957
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: PWA50311-3 MFR: OEM ⚠ 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
KEY FEATURES
•
OVERALL DIAMETER: 4.000 INCHES NOMINAL IN
•
INSIDE DIAMETER: 3.442 INCHES MINIMUM AND 3.451 INCHES MAXIMUM IN
•
MATERIAL: ALUMINUM ALLOY 6061
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER4.000 INCHES NOMINAL IN
INSIDE DIAMETER3.442 INCHES MINIMUM AND 3.451 INCHES MAXIMUM IN
SPECIAL FEATURESITEM IS ANODIZED PER AMS 2470 AND IS 1.000 IN. HIGH; 3.500-16 UN THD IN
MATERIALALUMINUM ALLOY 6061
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is PWA50311-3?
PWA50311-3 is a PROTECTOR,FLANGE.
What is the NSN for PWA50311-3?
PWA50311-3 is cataloged in the U.S. Government catalog under NSN 5340-01-121-6957. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.