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Applications

Coolant, hot water, mild chemicals
Industrial and vehicle coolant systems; low pressure drain lines
Agriculture, construction, general industrial, transportation

Heater Hose SAE 20R3EC Class D-2

Series 7181 is a flexible, lightweight, high temperature coolant/heater hose for SAE service. The hose construction incorporates premium grade EPDM materials that provide electrochemical resistance to inhibit striations and rusting of hose-to-metal interfaces, and high temperature performance. The hose is resistant to abrasion, mild chemicals and weathering.

Tube: Black EPDM
Reinforcement: Multiple textile plies
Cover: Black EPDM; smooth finish
Temp. Range: -40F to +257F (-40C to +125C)
Brand Method: White ink
Brand Example: PARKER SERIES 7181 HEATER HOSE SAE 20R3EC D-2 (ID) XX PSI MAX WP ELECTROCHEMICALLY RESISTANT MADE IN USA (DATE CODE)
Design Factor: 4:1
Industry Standards: SAE 20R3EC Class D2
Vacuum: Not recommended
Compare to: Gates Green Stripe, Veyance OEM
Packaging: Reels, cartons

 
 
Part No. ID
(in)
ID
(mm)
Reinf.
Plies
OD
(in)
OD
(mm)
Approx.
Wt. (lbs/ft)
Min.
Bend
Rad (in)
Max.
Rec.
WP (psi)
Perm
Cplg
Rec *
Std
Pack
Qty (ft)
Stock
Status
**
7181-1001 1 25.4 2 1.339 34 0.37 12 45 * 300 Y
7181-251 1/4 6.4 2 0.526 13.4 0.1 2.5 65 * 700 Y
7181-311 5/16 8.0 2 0.589 15.0 0.18 3.5 65 * 700 Y
7181-381 3/8 9.5 2 0.69 17.5 0.16 5 65 * 600 Y
7181-501 1/2 12.7 2 0.815 20.7 0.19 6 65 * 500 Y
7181-631 5/8 15.9 2 0.94 23.9 0.23 8 65 HY 500 Y
7181-631050 5/8 15.9 2 0.94 23.9 0.23 8 65 HY 5 x 50 Y
7181-751 3/4 19.1 2 1.065 27.1 0.27 9 50 * 500 Y

Table Notes 
* Couplings: Refer to CrimpSource at www.safehose.com for coupling recommendations and crimp specifications.
** Stock: Y indicates stocked item; N indicates non-stocked item. Stock status subject to change. Contact Parker Customer Service.









WARNING! Couplings attached with bands or clamps may reduce the working pressure of the hose assembly to less than the maximum rated working pressure of the hose. Refer to the NAHAD Industrial Hose Assembly Guidelines.