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72720 — VALVE,SAFETY RELIEF

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

72720: VALVE,SAFETY RELIEF.

The VALVE,SAFETY RELIEF is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, connection_type: THREADED EXTERNAL PIPE FIRST END, connection_style: PLAIN (PIPE) FIRST END, thread_direction: RIGHT-HAND FIRST END, disk_loading_method: SPRING, flow_control_device: STEM. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-146-8832, 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
72720
NSN: 5330-00-146-8832
NIINs: 001468832, 002325722
FSC: 5330 — Packing and Gasket Materials
CAGE: 80254 — TEXTRON LYCOMING INC WILLIAMSPORT PLANT (USA)
SPECIFICATIONS
materialSTEEL OVERALL
connection_typeTHREADED EXTERNAL PIPE FIRST END
connection_stylePLAIN (PIPE) FIRST END
thread_directionRIGHT-HAND FIRST END
disk_loading_methodSPRING
flow_control_deviceSTEM
nominal_thread_size0.125 INCHES FIRST END IN
valve_operation_methodAUTOMATIC
thread_series_designatorNPT FIRST END
NSN5330-00-146-8832
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 72720 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
•
CROSS-SECTIONAL THICKNESS: 0.037 INCHES NOMINAL IN
•
STYLE DESIGNATOR: TRIANGLE
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
•
APERTURE DIAMETER: 1.938 INCHES NOMINAL IN
•
BOLT CIRCLE DIAMETER: 3.000 INCHES NOMINAL IN
•
OUTSIDE CORNER RADIUS: 0.281 INCHES NOMINAL IN
•
MATERIAL: ASBESTOS OVERALL
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL THICKNESS0.037 INCHES NOMINAL IN
STYLE DESIGNATORTRIANGLE
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
APERTURE DIAMETER1.938 INCHES NOMINAL IN
BOLT CIRCLE DIAMETER3.000 INCHES NOMINAL IN
SPECIAL FEATURESSIDE RADIUS FROM GASKET CENTER 1.312 INCH IN
OUTSIDE CORNER RADIUS0.281 INCHES NOMINAL IN
MATERIALASBESTOS OVERALL
HOLE DIAMETER0.281 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 72720?
72720 is a VALVE,SAFETY RELIEF.
What is the NSN for 72720?
72720 is cataloged in the U.S. Government catalog under NSN 5330-00-146-8832. 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.