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O Ring Seals for D375A-1
, O Ring Seals for D275A-5
, Construction Machinery O Ring Seals
1. Quick Details of seal 07000-71007:
| Part NO. |
07000-71007 |
| Machine |
Crawler Dozer |
| Size |
5.7 mm thickness |
| Material |
SILICON |
| Oil seal type |
O RING |
2. 07000-71007 parts on group :
| NO. |
PARTNO. |
PRATNAME |
QTY |
| 1 |
198-15-35001 |
VALVE ASSEMBLY |
1 |
| 2 |
198-15-38000 |
VALVE ASSEMBLY |
1 |
| 3 |
198-15-38120 |
SEAT |
1 |
| 4 |
07043-70108 |
PLUG |
9 |
| 5 |
07042-20108 |
PLUG |
4 |
| 6 |
07043-70211 |
PLUG |
2 |
| 7 |
07000-71007 |
O-RING (K4) |
3 |
| 8 |
07000-72014 |
O-RING (K4) |
2 |
| 9 |
07000-72020 |
O-RING (K4) |
2 |
| 10 |
198-15-38110 |
VALVE BODY |
1 |
| 11 |
198-15-38140 |
SPOOL |
1 |
| 12 |
198-15-38150 |
SPOOL |
1 |
| 13 |
09363-00850 |
YOKE |
2 |
| 14 |
01580-10806 |
NUT |
2 |
| 15 |
195-15-38820 |
COVER |
1 |
| 16 |
195-15-38920 |
GASKET (K4) |
1 |
| 17 |
01010-81025 |
BOLT |
2 |
| 18 |
01643-31032 |
WASHER |
2 |
| 19 |
198-15-38710 |
DETENT ASSY |
2 |
| 20 |
07002-01623 |
O-RING (K4) |
2 |
| 21 |
06120-01816 |
BEARING,SEAL |
2 |
| 22 |
198-15-38650 |
SHAFT |
1 |
| 23 |
04010-00519 |
KEY |
2 |
| 24 |
01640-21826 |
WASHER |
1 |
3. 07000-71007 picture:
4. Service part number :
| PART NO. |
PART NO. |
Part NO. |
| 707-35-52670 |
707-51-45640 |
707-99-75600 |
| 707-51-45640 |
707-51-11640 |
707-51-80640 |
| 707-35-52670 |
707-35-91100 |
707-98-36600 |
| 707-35-52690 |
707-35-91130 |
707-98-56600 |
| 707-99-76230 |
707-35-91140 |
707-51-85650 |
| 707-99-76260 |
707-35-91200 |
707-51-90630 |
| 707-99-76300 |
707-35-91220 |
707-51-90640 |
| 707-99-77050 |
707-35-91250 |
707-51-90650 |
| 707-99-77090 |
707-35-91311 |
707-51-95630 |
| 707-99-77120 |
707-44-85150 |
707-98-25980 |
| 707-99-77130 |
707-44-90070 |
707-44-10911 |
| 707-99-77140 |
707-44-90080 |
707-51-18030 |
| 707-51-70630 |
707-44-90180 |
707-98-37580 |
| 707-51-70650 |
707-44-90150 |
707-51-20250 |
| 707-99-77240 |
707-98-60121 |
707-35-52700 |
5. FAQ
Q: What material are these red O-rings typically made of?
A: The red color most commonly indicates silicone rubber (VMQ). Depending on the application, they can also be fluorosilicone (FVMQ) or high-temperature nitrile (NBR), but silicone is the standard material for red O-rings.
Q: What are the key properties of silicone rubber for these O-rings?
A: Silicone offers excellent heat resistance (-60°C to +200°C), good low-temperature flexibility, and strong resistance to ozone, weathering, and aging. It works well with air, steam, and non-polar fluids, though it is not recommended for most mineral oils or fuels.
Q: What common mistakes cause these O-rings to fail early?
A: The most frequent causes are improper installation (twisting, pinching, or overstretching), chemical incompatibility with the system fluid, extreme temperatures leading to hardening or brittleness, scratches on mating surfaces, and using the wrong size or hardness (durometer) for the application.
Q: What are the key properties of silicone rubber for this seal?
A: Silicone offers excellent heat resistance (operating range roughly -60°C to +200°C), great flexibility even at low temperatures, and strong resistance to ozone, weathering, and aging. It works well with hot air, steam, and non-polar fluids, though it is not recommended for use with most mineral oils or fuels.
Q: How do I install this O-ring correctly?
A: Start by thoroughly cleaning the O-ring groove and mating surfaces to remove dirt, burrs, or old seal residue. Lightly lubricate the O-ring with a compatible fluid or grease to ease installation. Carefully fit the seal into the groove, making sure it does not twist, overstretch, or get pinched. When assembling components, use proper tools to avoid damaging the seal edges.
Q: What common issues cause O-ring failure?
A: Common causes include improper installation (twisting, pinching, or overstretching), chemical incompatibility with the fluid, excessive heat or cold leading to hardening or brittleness, surface scratches on mating parts, and using the wrong size or durometer.
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