KASTAS ROD SEALS K31
K31 is a three piece single acting sealing set which consist of one elastomeric main sealing element with additional sealing lip, one special profile elastomer nitrile rubber that goes into the main sealing component and one thermoplastic back-up ring.
PRODUCT ADVANTAGES
• Able to work in high pressures
• Superior sealing effect in low pressures
• Easy assembly into closed grooves
• Superior sealing effect with the secondary lip
• Secondary sealing lip provides extra protection against the ingress of dirt particles.
• Highly wear resistant
• Improved sealing gap due to the active back-up ring
APPLICATION
Mining equipment, iron and steel industry, metal injection machines, scrap cutters, marine hydraulics, cranes and mobile hydraulics.
| MATERIAL | CODE | |
| NBR | 70 SHORE A | NB7001 |
| PU | 94 SHORE A | PU9401 |
| POM | PM9901 |
| OPERATING CONDITIONS | |||
| MEDIA | Mineral oils (DIN 51524) | HFA and HFB | HFC |
| TEMPERATURE | -30°C +100°C | +5°C +50°C | -30°C +40°C |
| PRESSURE | ≤630 Bar | ≤630 Bar | ≤630 Bar |
| SPEED | ≤0.5 m/sec | ≤0.5 m/sec | ≤0.5 m/sec |
| SURFACE ROUGHNESS | Ra | Rmax | |
| Sliding Surface | Ød | ≤0.4 μm | ≤3.2 μm |
| Groove Base | ØD | ≤1.6 μm | ≤10 μm |
| Groove Flanks | B | ≤3.2 μm | ≤16 μm |
INSTALLATION
Easily assembled into closed grooves according to the minimum diameter values that are given in the below table. Open grooves or special assembly tools should be used for the values that are outside this table. It is very important that the assembly tools must be of soft material and have no sharp edges. Before installation the rod seal must be oiled with system oil.
| MINUMUM DIAMETER VALUES FOR CLOSED TYPE OF GROOVES | ||||
| (D-d)/2 (mm) | <7.5 | 10 | 12.5 | 15 |
| d min (mm) | 50 | 80 | 100 | 105 |
NOTES
K31 can be used in all type of cylinders safely due to the reason of perfect adaptation to the pressure changes.
| PERMISSIBLE SEALING GAP | |
| Pressure (Bar) | Smax (mm) |
| 150 | 1.0 |
| 250 | 0.8 |
| 400 | 0.6 |
| 630 | 0.4 |
| KASTAŞ NO | d(f8) | D(H11) | B(-0/+0.2) | b | n |
| K31-025 PU | 25 | 35 | 8.3 | 7.3 | 4 |
| K31-030 PU | 30 | 40 | 11 | 10 | 4 |
| K31-031 PU | 31.75 | 38.1 | 7.35 | 6.35 | 3 |
| K31-035 PU | 35 | 50 | 10.5 | 9.5 | 5 |
| K31-038 PU | 38.1 | 47.625 | 7.35 | 6.35 | 5 |
| K31-040 PU | 40 | 55 | 10.5 | 9.5 | 5 |
| K31-040/1 PU | 40 | 50 | 8.3 | 7.3 | 4 |
| K31-040/2 PU | 40 | 55 | 12.4 | 11.4 | 5 |
| K31-044 PU | 44.45 | 57.15 | 10.52 | 9.52 | 4.5 |
| K31-045 PU | 45 | 60 | 12.4 | 11.4 | 5 |
| K31-050 PU | 50 | 65 | 12.4 | 11.4 | 5 |
| K31-050/3 PU | 50 | 60 | 8.3 | 7.3 | 4 |
| K31-050/1 PU | 50.8 | 60.32 | 10.52 | 9.52 | 4 |
| K31-050/2 PU | 50.8 | 63.5 | 10.52 | 9.52 | 4.5 |
| K31-055 PU | 55 | 70 | 12.4 | 11.4 | 5 |
| K31-055/1 PU | 55 | 68 | 14 | 13 | 4.5 |
| K31-057 PU | 57.15 | 69.85 | 10.52 | 9.52 | 4.5 |
| K31-060 PU | 60 | 75 | 12.4 | 11.4 | 5 |
| K31-060/1 PU | 60 | 73 | 14 | 13 | 4.5 |
| K31-063 PU | 63.5 | 76.2 | 10.52 | 9.52 | 4.5 |
| K31-065 PU | 65 | 78 | 11 | 10 | 4.5 |
| K31-065/1 PU | 65 | 80 | 10 | 9 | 5 |
| K31-069 PU | 69.85 | 82.55 | 10.52 | 9.52 | 4.5 |
| K31-070 PU | 70 | 85 | 12.4 | 11.4 | 5 |
| K31-070/1 PU | 70 | 83 | 11 | 10 | 4.5 |
| K31-070/2 PU | 70 | 85 | 10 | 9 | 5 |
| K31-070/3 PU | 70 | 80 | 13 | 12 | 4 |
| K31-070/4 PU | 70 | 85 | 11 | 10 | 5 |
| K31-075 PU | 75 | 88 | 11 | 10 | 4.5 |
| K31-075/1 PU | 75 | 90 | 10 | 9 | 5 |
| K31-076/2 PU | 76.2 | 88.9 | 10.52 | 9.52 | 4.5 |
| K31-076 PU | 76.2 | 92.7 | 13.7 | 12.7 | 5.5 |
| K31-080 PU | 80 | 95 | 12.4 | 11.4 | 5 |
| K31-080/1 PU | 80 | 93 | 11 | 10 | 4.5 |
| K31-080/2 PU | 80 | 95 | 10 | 9 | 5 |
| K31-082 PU | 82.55 | 95.25 | 10.52 | 9.52 | 4.5 |
| K31-085 PU | 85 | 100 | 11 | 10 | 5 |
| K31-085/1 PU | 85 | 105 | 16 | 15 | 6 |
| K31-088 PU | 88.9 | 101.6 | 10.52 | 9.52 | 4.5 |
| K31-088/1 PU | 88.9 | 104.77 | 13.7 | 12.7 | 5.5 |
| K31-090 PU | 90 | 105 | 12.4 | 11.4 | 5 |
| K31-090/1 PU | 90 | 105 | 11 | 10 | 5 |
| K31-090/2 PU | 90 | 110 | 18 | 17 | 6 |
| K31-090/4 PU | 90 | 100 | 13 | 12 | 4 |
| K31-090/3 PU | 90 | 110 | 15.5 | 14.5 | 6 |
| K31-095 PU | 95 | 110 | 11 | 10 | 5 |
| K31-095/1 PU | 95 | 115 | 16 | 15 | 6 |
| K31-100 PU | 100 | 120 | 15.5 | 14.5 | 6 |
| K31-100/1 PU | 100 | 115 | 11 | 10 | 5 |
| K31-101 PU | 101.6 | 114.3 | 15.28 | 14.28 | 4.5 |
| K31-101/1PU | 101.6 | 117.47 | 15.27 | 14.27 | 5.5 |
| K31-105 PU | 105 | 120 | 13 | 12 | 5 |
| K31-110 PU | 110 | 130 | 13 | 12 | 6 |
| K31-110/1 PU | 110 | 125 | 13 | 12 | 5 |
| K31-110/2 PU | 110 | 130 | 15.5 | 14.5 | 6 |
| K31-114 PU | 114.3 | 127 | 15.28 | 14.28 | 4.5 |
| K31-114/1 PU | 114.3 | 133.35 | 16.87 | 15.87 | 6 |
| K31-115 PU | 115 | 135 | 15.5 | 14.5 | 6 |
| K31-120 PU | 120 | 140 | 13 | 12 | 6 |
| K31-125 PU | 125 | 145 | 15.5 | 14.5 | 6 |
| K31-127 PU | 127 | 146.05 | 16.87 | 15.87 | 6 |
| K31-130 PU | 130 | 150 | 15.5 | 14.5 | 6 |
| K31-139 PU | 139.7 | 152.4 | 15.28 | 14.28 | 4.5 |
| K31-140 PU | 140 | 160 | 15.5 | 14.5 | 6 |
| K31-150 PU | 150 | 160 | 15.5 | 14.5 | 4 |
| K31-150/1 PU | 150 | 170 | 15.5 | 14.5 | 6 |
| K31-152 PU | 152 | 171 | 16.9 | 15.87 | 6 |