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18-2021 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

18-2021: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include phase: SINGLE, length: 3.000 INCHES NOMINAL IN, scale_range: +0.0 TO 50.0 POUNDS PER SQUARE INCH SINGLE INDICATOR SINGLE SCALE LBS, contact_type: PIN, current_type: DC, accuracy_rating: 1.0 POUNDS PER SQUARE INCH SINGLE INDICATOR SINGLE SCALE LBS. This part is cataloged in the U.S.

Government catalog under NSN 5331-00-410-2968, 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
18-2021
NSN: 5331-00-410-2968
NIINs: 004102968, 005145334
FSC: 5331 — O-ring
CAGE: 59309 — MCC HOLDINGS, INC. DBA CRANE VALVE NORTH AMERICA DIV CRANE CHEMPHARMA & ENERGY (USA)
SPECIFICATIONS
phaseSINGLE
length3.000 INCHES NOMINAL IN
scale_range+0.0 TO 50.0 POUNDS PER SQUARE INCH SINGLE INDICATOR SINGLE SCALE LBS
contact_typePIN
current_typeDC
accuracy_rating1.0 POUNDS PER SQUARE INCH SINGLE INDICATOR SINGLE SCALE LBS
contact_quantity4
frequency_rating400.0 HERTZ NOMINAL
special_featuresCASE MATERIAL: METAL
dc_voltage_rating26.0 VOLTS NOMINAL
features_providedENCAPSULATED
electrical_connection_quantity1
NSN5331-00-410-2968
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 18-2021 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 HEIGHT: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 1.103 INCHES MINIMUM AND 1.115 INCHES MAXIMUM IN
•
MATERIAL: RUBBER SYNTHETIC
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
CENTER HOLE DIAMETER1.103 INCHES MINIMUM AND 1.115 INCHES MAXIMUM IN
MATERIALRUBBER SYNTHETIC
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 18-2021?
18-2021 is a O-RING.
What is the NSN for 18-2021?
18-2021 is cataloged in the U.S. Government catalog under NSN 5331-00-410-2968. This indicates validated use in U.S. government and defense supply chains.
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