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Technical Data Sheet
2986-2 ✓ Verified by PartsTable
· ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The EXPANSION JOINT,PIPE is a the manufacturer industrial component. Key specifications include material: IRON, overall_length: 12.330 INCHES NOMINAL IN, special_features: LOBE LG 5.980 IN. IN, end_item_identification: M-D PNEUMATICS MODEL MD3206-57P3-4709 PUMP.

This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-291-5373, 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
2986-2
NSN: 5331-00-291-5373
FSC: 5331 — O-RING
CAGE: 96046 — CRANE PUMPS & SYSTEMS PFT CORP DIV CRANE PUMPS & SYSTEM PFT CORP. (USA)
SPECIFICATIONS
materialIRON
overall_length12.330 INCHES NOMINAL IN
special_featuresLOBE LG 5.980 IN. IN
end_item_identificationM-D PNEUMATICS MODEL MD3206-57P3-4709 PUMP
NSN5331-00-291-5373
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 2986-2 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
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
CENTER HOLE DIAMETER: 3.844 INCHES MINIMUM AND 3.874 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL HEIGHT0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
CENTER HOLE DIAMETER3.844 INCHES MINIMUM AND 3.874 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
2986-2Interchangeable
interchangeable cross-reference
interchangeable
902-2986BInterchangeable
interchangeable cross-reference
interchangeable
4-30581Interchangeable
interchangeable cross-reference
interchangeable
B-2-6183Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2986-2?
2986-2 is a EXPANSION JOINT,PIPE.
What parts can replace 2986-2?
There are 4 known substitutes for 2986-2: 2986-2, 902-2986B, 4-30581 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2986-2?
2986-2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-291-5373. This indicates validated use in U.S. government and defense supply chains.
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