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21988 — CONNECTING LINK,RIGID

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

21988: CONNECTING LINK,RIGID.

The CONNECTING LINK,RIGID is a the manufacturer industrial component. Key specifications include temp_rating: -20.0 FAHRENHEIT AND 180.0 FAHRENHEIT SINGLE RESPONSE DEGF, operating_pressure: 800.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS, burst_test_pressure: 4000.0 POUNDS PER SQUARE INCH LBS, end_connection_design: STRAIGHT ALL ENDS, media_for_which_designed: REFRIGERANT SINGLE RESPONSE, cross-sectional_shape_style: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-187-3635, 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
21988
NSN: 5330-00-187-3635
NIINs: 001873635, 011700820, 011925706, 012491677, 015819674, 016101713
FSC: 5330 — Packing and Gasket Materials
CAGE: 33844 — KLAUER MANUFACTURING COMPANY (USA)
SPECIFICATIONS
temp_rating-20.0 FAHRENHEIT AND 180.0 FAHRENHEIT SINGLE RESPONSE DEGF
operating_pressure800.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS
burst_test_pressure4000.0 POUNDS PER SQUARE INCH LBS
end_connection_designSTRAIGHT ALL ENDS
media_for_which_designedREFRIGERANT SINGLE RESPONSE
cross-sectional_shape_styleROUND
measuring_method_and_length96.0 INCHES NOMINAL OVERALL IN
part_name_assigned_by_controlling_agencyPLUS II HOSE-STANDARD 1/4" FLARE FITTINGS
NSN5330-00-187-3635
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 21988 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: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 0.544 INCHES MINIMUM AND 0.554 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
CENTER HOLE DIAMETER0.544 INCHES MINIMUM AND 0.554 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 10
1281-3018Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
2900-103ALTCPC19Reference document
Same NSN cross-reference
Reference document — Secondary reference
AN6227-11Reference document
Same NSN cross-reference
Reference document — Secondary reference
253070R1Reference document
Same NSN cross-reference
Reference document — Secondary reference
JP2001-8Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
641727Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 21988?
21988 is a CONNECTING LINK,RIGID.
What parts can replace 21988?
There are 10 known substitutes for 21988: 1281-3018, 2900-103ALTCPC19, AN6227-11 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 21988?
21988 is cataloged in the U.S. Government catalog under NSN 5330-00-187-3635. This indicates validated use in U.S. government and defense supply chains.
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