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Applications

• Automobiles, buses, mobile/off-road equipment, trucks

• Other equipment or vehicles with heating lines

Silicone Coolant Hose/ 3-Ply

Series 6750 is a 3-ply silicone coolant hose designed to transfer high temperature solutions in coolant circuits on automobiles, buses, mobile/off-road equipment, trucks and any engine incorporating a radiator application. The hose meets or exceeds SAE J20R1 Class A requirements, with a temperature range of -65° to +350°F (-53°C to + 176°C). The multiple plies of textile reinforcement provide durability and the silicone construction resists coolant solutions, aging, cold leaks, cracking, delamination, ozone and peeling. Series 6750 is manufactured on twelve-foot mandrels for tight dimensional tolerances and is offered in standard 3-foot lengths.

Tube: Brick red silicone
Reinforcement: Multiple high temperature textile plies
Cover: Blue silicone, matte finish
Temp Range: -65°F to +350°F (-53° C to +176° C)
Brand Method: Black ink
Brand Example: PARKER SILICONE SERIES 6750 (ID) -65°F to +350°F (DATE CODE)MADE IN USA
Max. Rec. WP 1/3 of minimum burst pressure shown in the table below
Industry Standards: SAE J20R1 Class A
Vacuum: Not recommended
Compare To: Federal 5515; Flexfab Blue 5515; Flexfab Green 5500; Purosil 7030
Packaging: Cartons

 
 
Part Number Size
(in)
ID
(in)
ID
(mm)
Reinf
Plies
OD
(in)
OD
(mm)
Approx
Wt
(lbs/ea)
Min
Burst
Press
(psi)
Perm
Cplg
Rec
Std Pack Qty
(ft)
Stock Status
6750-0250003 1/4 0.250 6.4 3 0.600 15.2 10.02 477 * 1 X 3-ft N
6750-0310003 5/16 0.313 8.0 3 0.660 16.8 1.20 477 * 1 X 3-ft N
6750-0375003 3/8 0.375 9.5 3 0.720 18.3 1.44 477 * 1 X 3-ft Y
6750-0500003 1/2 0.500 12.7 3 0.850 21.6 1.56 425 * 1 X 3-ft Y
6750-0625003 5/8 0.625 15.9 3 0.970 24.6 2.49 376 * 1 X 3-ft Y
6750-0750003 3/4 0.750 19.1 3 1.100 27.9 2.73 325 * 1 X 3-ft Y
6750-0875003 7/8 0.875 22.2 3 1.220 31.0 3.00 325 * 1 X 3-ft Y
6750-1000003 1 1.000 25.4 3 1.350 34.3 3.24 299 * 1 X 3-ft Y
6750-1125003 1-1/8 1.125 28.6 3 1.470 37.3 3.60 299 * 1 X 3-ft Y
6750-1250003 1-1/4 1.250 31.8 3 1.60 40.6 3.84 276 * 1 X 3-ft Y
6750-1313003 1-5/16 1.313 33.4 3 1.660 42.2 3.96 276 * 1 X 3-ft N
6750-1375003 1-3/8 1.375 34.9 3 1.720 43.7 4.17 276 * 1 X 3-ft Y
6750-1500003 1-1/2 1.500 38.1 3 1.850 47.0 4.47 249 * 1 X 3-ft Y
6750-1625003 1-5/8 1.625 41.3 3 1.970 50.0 4.74 249 * 1 X 3-ft Y
6750-1750003 1-3/4 1.750 44.5 3 2.100 53.3 5.10 225 * 1 X 3-ft Y
6750-1875003 1-7/8 1.875 47.6 3 2.220 56.4 5.40 200 * 1 X 3-ft Y
6750-2000003 2 2.000 50.8 3 2.350 59.7 5.73 200 * 1 X 3-ft Y
6750-2125003 2-1/8 2.125 54.0 3 2.470 62.7 6.04 175 * 1 X 3-ft Y
6750-2250003 2-1/4 2.250 57.2 3 2.600 66.0 6.36 175 * 1 X 3-ft Y
6750-2313003 2-5/16 2.313 58.8 3 2.660 67.6 6.68 175 * 1 X 3-ft N
6750-2375003 2-3/8 2.375 60.3 3 2.720 69.1 7.00 175 * 1 X 3-ft N
6750-2500003 2-1/2 2.500 63.5 3 2.850 72.4 7.20 149 * 1 X 3-ft Y
6750-2625003 2-5/8 2.625 66.7 3 2.970 75.4 7.53 125 * 1 X 3-ft Y
6750-2750003 2-3/4 2.750 69.9 3 3.100 78.7 7.92 125 * 1 X 3-ft Y
6750-2875003 2-7/8 2.875 73.0 3 3.220 81.8 8.43 87 * 1 X 3-ft N
6750-3000003 3 3.000 76.2 3 3.350 85.1 9.00 87 * 1 X 3-ft Y
6750-3125003 3-1/8 3.125 79.4 3 3.470 88.1 9.53 75 * 1 X 3-ft N
6750-325003 3-1/4 3.250 82.6 3 3.600 91.4 9.72 75 * 1 X 3-ft N
6750-3313003 3-5/16 3.313 84.2 3 3.660 93.0 9.78 75 * 1 X 3-ft N
6750-3375003 3-3/8 3.375 85.7 3 3.720 94.5 9.87 75 * 1 X 3-ft N
6750-3500003 3-1/2 3.500 88.9 3 3.850 97.8 9.96 75 * 1 X 3-ft Y
6750-3625003 3-5/8 3.625 92.1 3 3.970 100.8 10.14 49 * 1 X 3-ft N
6750-3750003 3-3/4 3.750 95.3 3 4.100 104.1 10.47 49 * 1 X 3-ft N
6750-3875003 3-7/8 3.875 98.4 3 4.220 107.2 10.80 49 * 1 X 3-ft N
6750-4000003 4 4.000 101.6 3 4.350 110.5 11.10 49 * 1 X 3-ft Y
6750-4250003 4-1/4 4.250 108.0 3 4.600 116.8 12.30 49 * 1 X 3-ft N
6750-4500003 4-1/2 4.500 114.3 3 4.850 123.2 13.20 49 * 1 X 3-ft Y
6750-4750003 4-3/4 4.750 120.7 3 5.100 129.5 13.71 49 * 1 X 3-ft N
6750-5000003 5 5.000 127.0 3 5.350 135.9 14.34 49 * 1 X 3-ft 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.









WARNINGS!
• 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.