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JCB brake piston seal
, square section O ring seal
, JCB parts O ring seal
1. Quick Details of seal 813/50026:
| Part NO. |
813/50026 |
| Machine |
backhoe loader |
| Size |
OEM |
| Material |
HNBR Hydrogenated Nitrile Butadiene Rubber |
| Oil seal type |
O RING |
2. 813/50026 parts on group :
| NO. |
PART NO. |
PRAT NAME |
QTY |
| 1 |
458/20371 |
Piston Brake 139.4 bore (was 130mm) |
2 |
| 2 |
813/50012 |
Seal Brake Piston |
2 |
| 3 |
813/50026 |
Seal Brake Piston (square section) |
2 |
| 4 |
450/10213 |
Pin reaction |
6 |
| 5 |
458/20285 |
Plate brake counter |
12 |
| 6 |
458/20353 |
Plate brake friction |
10 |
| 7 |
450/10215 |
Carrier Brake Plate |
2 |
| 8 |
2203/0071 |
Circlip External |
4 |
| 9 |
816/60040 |
Nipple Screw |
2 |
| 10 |
835/00017 |
Cap Grease Nipple |
2 |
| 11 |
450/18204 |
Pin Brake Back-Off |
6 |
| 12 |
814/00365 |
Spring Compression |
6 |
| 13 |
448/16905 |
Bush tension Flanged - External |
6 |
| 14 |
2203/1020 |
Circlip |
6 |
3. 813/50026 picture:
4. Service part number :
| PART NO. |
PART NO. |
Part NO. |
| 707-98-26110 |
707-98-37570 |
707-98-60100 |
| 707-98-37500 |
707-98-58230 |
707-98-58230 |
| 707-98-37510 |
707-98-58240 |
707-98-58240 |
| 707-98-25910 |
707-98-36700 |
707-51-45640 |
| 707-98-25920 |
707-98-36740 |
707-51-45650 |
| 707-98-25970 |
707-98-37110 |
707-51-50640 |
| 707-98-25980 |
707-98-37130 |
707-51-55630 |
| 707-98-38520 |
707-98-64410 |
707-51-55640 |
| 707-98-38551 |
707-98-64420 |
707-98-64420 |
| 707-98-38600 |
707-98-64450 |
707-98-64450 |
| 707-98-25980 |
707-98-37130 |
707-51-95650 |
| 707-98-26600 |
707-98-38551 |
707-98-64420 |
| 707-98-26620 |
707-98-38600 |
707-98-64450 |
5. FAQ
Q: What raw material is adopted to manufacture these O-ring seals?
A: These O-rings are produced with premium HNBR hydrogenated nitrile rubber for comprehensive performance.
Q: What color is the standard version of this type of O-ring?
A: The standard color is black, customized color options are available upon bulk orders.
Q: Can these O-rings sustain relatively high working temperature continuously?
A: HNBR material keeps stable elasticity under medium and high long-time operating temperature.
Q: How is the resistance to brake fluid and hydraulic oil for these seals?
A: The material formula delivers outstanding tolerance to brake fluid and common hydraulic mediums.
Q: Will the O-ring become swollen easily after long-term contact with oil liquid?
A: Optimized rubber formula effectively controls volume swelling in continuous oily environments.
Q: Are all O-rings produced according to strict dimensional tolerance standards?
A: Each O-ring is precision molded to perfectly match the standard installation grooves.
Q: Can these O-rings be used on both brake assemblies and hydraulic pipelines?
A: It fits brake system preferentially, and also works for related hydraulic sealing positions.
Q: How does the service cycle of graphite modified FKM O-rings compare with ordinary unmodified rubber sealing rings?
A: The graphite doping formula greatly improves high temperature resistance, anti-aging and anti-extrusion performance. Under daily full-load heavy loading conditions, its service cycle reaches 2.6 times that of standard pure rubber O-rings.
Q: Can this set of sealing rings block mine mud, rock dust and suspended hot hydraulic oil mist in harsh long-term outdoor mining working conditions?
A: The dense smooth fluororubber surface isolates tiny sediment and hot oil mist from penetrating pump assembly gaps, and wear-resistant PTFE back rings avoid friction damage mixed with hard mineral dust inside pump cavities.
Q: What practical labor-saving advantages can field maintenance technicians gain from using this fully pre-matched all-in-one O-ring kit?
A: All commonly used specifications required for main pump overhaul are pre-assembled in one set without separate ordering. Maintenance staff do not need to carry scattered loose seals or repeatedly measure dimensions on site, significantly shortening pump repair duration.
6. Exhibition and Wearhous
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