Parker Industrial Hose site map  |  parker.com
Part Number Search
 
 
Hose Selector
Parker/Competitor
Product Search
CrimpSource
Find a Distributor
How to Order
 

Applications

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

• Other equipment or vehicles with heating lines

Silicone Coolant Hose/ 4-Ply

Series 6750 is a 4-ply heavy duty 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 6751 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 6751 (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 5581; Flexfab Blue 5581; Flexfab Green 5501; Flextech C40; Purosil 70
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
6751-0250003 1/4 0.250 6.4 4 0.630 16.0 1.50 477 * 1 X 3-ft N
6751-0313003 5/16 0.313 7.9 4 0.690 17.5 1.68 477 * 1 X 3-ft N
6751-0375003 3/8 0.375 9.5 4 0.760 19.3 2.07 477 * 1 X 3-ft N
6751-0500003 1/2 0.500 12.7 4 0.880 22.4 2.22 425 * 1 X 3-ft N
6751-0625003 5/8 0.625 15.9 4 1.010 25.7 2.58 376 * 1 X 3-ft N
6751-0750003 3/4 0.750 19.1 4 1.130 28.7 3.03 325 * 1 X 3-ft N
6751-0875003 7/8 0.875 22.2 4 1.26 32.0 3.33 325 * 1 X 3-ft N
6751-1000003 1 1.000 25.4 4 1.380 35.1 3.66 299 * 1 X 3-ft N
6751-1125003 1-1/8 1.125 28.6 4 1.510 38.4 4.14 299 * 1 X 3-ft N
6751-1250003 1-1/4 1.250 31.8 4 1.630 41.4 4.38 276 * 1 X 3-ft N
6751-1313003 1-5/16 1.313 33.3 4 1.690 42.9 4.65 276 * 1 X 3-ft N
6751-1375003 1-3/8 1.375 34.9 4 1.760 44.7 4.95 276 * 1 X 3-ft N
6751-1500003 1-1/2 1.500 38.1 4 1.880 47.8 5.49 249 * 1 X 3-ft N
6751-1625003 1-5/8 1.625 41.3 4 2.010 51.1 5.67 249 * 1 X 3-ft N
6751-1750003 1-3/4 1.750 44.5 4 2.130 54.1 5.85 225 * 1 X 3-ft N
6751-1875003 1-7/8 1.875 47.6 4 2.260 57.4 6.51 200 * 1 X 3-ft N
6751-2000003 2 2.000 50.8 4 2.380 60.5 6.84 200 * 1 X 3-ft Y
6751-2125003 2-1/8 2.125 54.0 4 2.510 63.8 7.17 175 * 1 X 3-ft N
6751-2250003 2-1/4 2.250 57.2 4 2.630 66.8 7.38 175 * 1 X 3-ft N
6751-2313003 2-5/16 2.313 58.7 4 2.690 68.3 7.53 175 * 1 X 3-ft N
6751-2375003 2-3/8 2.375 60.3 4 2.760 70.1 7.74 175 * 1 X 3-ft N
6751-2500003 2-1/2 2.500 63.5 4 2.880 73.2 8.19 149 * 1 X 3-ft N
6751-2625003 2-5/8 2.625 66.7 4 3.010 76.5 8.64 125 * 1 X 3-ft Y
6751-2750003 2-3/4 2.750 69.9 4 3.130 79.5 8.91 125 * 1 X 3-ft N
6751-2875003 2-7/8 2.875 73.0 4 3.260 82.8 9.33 87 * 1 X 3-ft N
6751-3000003 3 3.000 76.2 4 3.380 85.9 9.93 87 * 1 X 3-ft N
6751-3125003 3-1/8 3.125 79.4 4 3.510 89.2 10.14 75 * 1 X 3-ft N
6751-3250003 3-1/4 3.250 82.6 4 3.630 92.2 10.32 75 * 1 X 3-ft N
6751-3313003 3-5/16 3.313 84.1 4 3.690 93.7 10.41 75 * 1 X 3-ft N
6751-3375003 3-3/8 3.375 85.7 4 3.760 95.5 10.53 75 * 1 X 3-ft N
6751-3500003 3-1/2 3.500 88.9 4 3.880 98.6 10.80 75 * 1 X 3-ft N
6751-3625003 3-5/8 3.625 92.1 4 4.010 101.9 11.10 49 * 1 X 3-ft N
6751-3750003 3-3/4 3.750 95.3 4 4.130 104.9 11.43 49 * 1 X 3-ft N
6751-3875003 3-7/8 3.875 98.4 4 4.260 108.2 11.76 49 * 1 X 3-ft N
6751-4000003 4 4.000 101.6 4 4.380 111.3 12.12 49 * 1 X 3-ft Y
6751-4250003 4-1/4 4.250 108.0 4 4.630 117.6 13.20 49 * 1 X 3-ft N
6751-4500003 4-1/2 4.500 114.3 4 4.880 124.0 14.0 49 * 1 X 3-ft N
6751-4750003 4-3/4 4.750 120.7 4 5.130 130.3 14.61 49 * 1 X 3-ft N
6751-5000003 5 5.000 127.0 4 5.380 136.7 15.27 49 * 1 X 3-ft N

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.