Parker Hannifin Corporation
Industrial Hose Division
Strongsville, OH
www.safehose.com
IHP Customer Service: 440-268-2400
Toll Free 866-810-HOSE or 866-810-4673
14
6621
HEATER & COOLANT HOSES
The Super Flexible hose is a coolant/heater hose that is mandrel made in continuous lengths up
to 130 feet, the longest length and most flexible silicone hose available in the industry. This hose
is resistant to coolant solutions, cracking, ozone, cold leaks, peeling and aging. This product is
made for extreme applications that require tight bends for connections between the radiator and
the engine on heavy-duty equipment, buses, trucks, etc. The X-treme Plus SF has a Greek
corrugated construction that allows this hose to be flexible enough to replace pre-formed elbows.
TUBE COLOR:
Black
REINFORCEMENT:
High-temperature-resistant plies with helical wire
COVER COLOR:
Red Greek Corrugated
BRANDING:
PARKER SILICONE SERIES 6621 -76° to +392°F (DATE CODE) MADE IN ITALY
TEMP. RANGE:
-76° to +392°F
APPLICATIONS:
Coolant and heater lines
SPECIFICATIONS:
Meets or exceeds performance criteria of SAE J20R2, ISO 1307-1997
MAX. WORKING PRESSURE:
1/3 of the Burst Pressure
6621
X-treme Plus SF Series
BURST
SIZE INSIDE DIAMETER OUTSIDE DIAMETER LENGTH PRESSURE
WEIGHT BEND RADIUS
PART NUMBER INCH INCH
MM INCH MM
FT
PSI
LBS/100FT INCH MM
6621-0500025
1/2
0.512
13
0.906
23
25
225
20
1.4
35
6621-0500130
1/2
0.512
13
0.906
23
130
225
20
1.4
35
6621-0594130 19/32 0.591
15
0.984
25
130
225
21
1.8
45
6621-0625025
5/8
0.630
16
1.024
26
25
225
22
1.8
45
6621-0625130
5/8
0.630
16
1.024
26
130
225
22
1.8
45
6621-0688130 11/16 0.709
18
1.102
28
130
225
23
1.8
45
6621-0750025
3/4
0.748
19
1.142
29
25
225
24
2.0
50
6621-0750130
3/4
0.748
19
1.142
29
130
225
24
2.0
50
6621-0813130 13/16 0.787
20
1.181
30
130
225
25
2.0
50
6621-1000025
1
0.984
25
1.378
35
25
225
30
2.0
50
6621-1000130
1
0.984
25
1.378
35
130
225
30
2.0
50
6621-1125130 1-1/8
1.102
28
1.496
38
130
225
33
2.6
65
6621-1188130 1-3/16 1.181
30
1.575
40
130
225
35
3.0
75
6621-1250025 1-1/4
1.260
32
1.693
43
25
225
40
3.1
80
6621-1375025 1-3/8
1.378
35
1.811
46
25
225
43
3.7
95
6621-1500025 1-1/2
1.496
38
1.929
49
25
225
46
3.9 100
6621-1625130 1-5/8
1.654
42
2.087
53
130
225
49
4.7 120
6621-1750025 1-3/4
1.772
45
2.205
56
25
225
54
5.1 130
6621-2000025
2
2.008
51
2.480
63
25
225
88
5.9 150
6621-2188130 2-3/16 2.165
55
2.638
67
130
225
95
7.1 180
6621-2250130 2-1/4
2.283
58
2.756
70
130
225
99
7.9 200
6621-2375130 2-3/8
2.362
60
2.874
73
130
225
103
8.3 210
6621-2500130 2-1/2
2.500
64
3.012 76.5
130
225
108
8.7 220
6621-2563130 2-9/16 2.559
65
3.071
78
130
225
111
8.7 220
6621-2750130 2-3/4
2.756
70
3.307
84
130
225
133
9.8 250
6621-3000130
3
2.992
76
3.543
90
130
225
143
10.6 270
6621-3125130 3-1/8
3.150
80
3.701
94
130
225
150
11.8 300
6621-3563130 3-9/16 3.543
90
4.134
105
130
225
188
13.8 350
6621-4000130
4
4.016
102
4.567
116
130
225
210
15.7 400