Availability: 1000 in stock
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Volume discounts available · Minimum order quantities apply for bulk pricing
Shipping:
- Standard models take 1-3 business days.
- Bulk orders take 3-7 business days.
- For urgent orders, please contact our sales team. [Email: info@ruijueparts.com]
Returns: We accept returns within 30 days of purchase. Learn more—return policy
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Oil Sealing
We specialize in seal kits compatible with brands such as Caterpillar, Komatsu, JCB, and John Deere. We offer B2B bulk order consultation and large-scale procurement services. With years of industry experience, we provide wholesale, OEM/ODM, and long-term bulk supply services to our global business partners. Submit your bulk order details, and our professional B2B team will provide you with competitive pricing, fast delivery times, and customized supply solutions within 24 hours.
Choose the seal kit of Ruijueparts. Slash costly downtime.
Fits equipment: M315D2, M322D, MH, MH3026, MH3024, M318D, M318C, M320, M318F, M317, M320F, M324D2, MH, M318D, MH, M323F, M322D2, M322F, M322D, M322C, M318C, MH, M315C, M315D M317D2 M316C M316F M316D M320D2 M313C M313D M322D2 MH M314F 5080 320C L 330 L 345B II 349F LXE 349D L 320-A L 325-A FM L 325B L M315F FM538 320-A S 320-A N 315D L 325-A M317F 322B LN 318B N 322N 325 LN 322-A LN M318F 349E L 325C L 322B 322C 319D LN 325C FM 349E L VG 330B L 330B LN 321C 345B 345C 321B 345D 349F L 325B LN 385C L 325D L 330-A L E110 349D2 319D L 330 LN 352F-VG 315-A L 325 L 315B 315C 330C L 318D L 320B LU 350-A L 320D FM 320B LL 330C FM 314C 317B L 322-A 538 325B 349D 330D L 322-A L 322-A N 325C 325D 352F 322B L 345B L 324D FM LL 330-A L 325-A LN 317-A 324D FM 349D2 L 352 319D 318D2 L 320C FM 319C 345C L 325 318C 325-A L 322 LN 318B 320-A 322 L 317-A N EL200B 385B 330-A 317B LN 317 N 345D L 320N 315-A 330C LN 320B 320C 320D E200B 315B L 365C L 320B FM LL 375-A 320B S 330-A LN 320B N 320B L 365B II 322C FM 315B FM L 330B 330C M312 M315 M318 320 L 365C 320B U 365B M320 330C 345C L
Condition: New – Open box: A new, unused item
Brand: CATERPILLAR replacement
Target Audience: Customers with long-term procurement needs for sealing kits, including repair shops, distributors, import/export trading companies, and construction machinery rental companies.
Our aftermarket seal kits deliver a practical, cost-effective solution without compromising on real-world performance. We offer a lower upfront cost and reliable sealing for your daily maintenance and repair needs.
We stock seal kits across CAT, Komatsu, Volvo, JCB, Hitachi, Doosan, John Deere, Kubota, and 10+ other brands—one supplier for your whole fleet.
Ship under RuijueParts branding, neutral (unbranded) packaging, or your own private label. Suitable for resellers and distributors.
When genuine OEM seals are out of production for your old machinery, we can custom-make oil seals using your dimensions or our engineer-recommended specifications.
Ship under RuijueParts branding, neutral (unbranded) packaging, or your own private label. Suitable for resellers and distributors.
Volume pricing for repair shops, dealers, and fleet operators. Get a quote via our website or WhatsApp: +86 13692100161.
OEM seal kits are the right choice when machinery is under active warranty, operating at peak duty cycles, or when failure risk is unacceptably high. Budget aftermarket—like Ruijue Parts—makes sense in these common scenarios:
When a machine is aging out of your fleet, OEM parts cost more than the job warrants. A budget kit extends service life without over-investing.
For machines used infrequently or on lower-intensity tasks, premium OEM pricing may not be justified.
When OEM stock is out or delivery takes weeks, an available aftermarket kit gets your machine running now.
Repair shops and fleet managers running high volumes of machines often balance OEM and aftermarket across their portfolio based on criticality.
Fully retract the cylinder and relieve system pressure before disassembly. Never work on a pressurized circuit.
Remove from the machine. Unthread the gland nut and withdraw the piston rod carefully to avoid surface damage.
Clean the bore, rod, and all metal parts with a lint-free cloth. Contamination introduced during reassembly accelerates seal wear—this step is especially important for budget-grade seals.
Check for scoring or pitting. Budget seals are more sensitive to surface imperfections—address rod damage before fitting new seals.
Lightly coat each seal with clean hydraulic fluid before installation. Use proper seal drivers — not screwdrivers or sharp tools — to avoid nicking the sealing lip.
Torque the gland nut to spec and cycle the hydraulic system under no-load conditions. Inspect for leaks before returning the machine to service.
Budget-grade seals may have shorter service intervals than OEM. Inspect rod seals for moisture, oil film, or weeping more frequently and replace proactively.
Contaminated fluid degrades seals faster — this applies especially to non-OEM materials. Replace fluid and filters on schedule.
When storing equipment with cylinders extended, protect rod surfaces from corrosion and debris to preserve wiper seal life.
Avoid using sharp tools during assembly to prevent nicks or scores on the seal lips. Pre-lubricating all components with clean hydraulic oil is recommended to ensure a smooth fit into the cylinder grooves.
Click "Add to Cart" for immediate dispatch, or contact our team for bulk pricing and wholesale support.
First order was a pleasant surprise-
great value for money.
Good! The 101529-00005 seal kit
performed exceptionally. No oil leaks,smooth operation.
Fast delivery and exactly as described.Highly recommend!
Seals fit well and arrived on time.
Good quality for the price.
