Rubber Seals for Agricultural
& Construction Machinery
Every process in-house, from mold design and rubber compounding to internal mixing, vulcanization and metalworking. A long-term rubber-parts supplier to OEMs such as YTO, Weichai Lovol and SANY.
Supplying OEMs and Research Institutes
Qualified supplier to multiple machinery OEMs · listed in no particular order
Products
Four families of rubber parts, each with material, hardness and compatible machines spelled out — ready to match against your drawing
Agricultural Machinery Parts
Fits seeders · corn harvesters · potato harvesters · round balers
- Gauge wheel assembly
- Press wheel assembly
- Dehiscing roller
- Rubber corrugated hose
- Fish-scale roller
- Star wheel
- Elevator sprocket
- Guide wheel assembly
- Support roller assembly
- Conveyor chain
- Main drive roller
- Auxiliary drive roller
- Upper drive roller
- Residue discharge roller
Construction Machinery Parts
Supplied to SANY drilling rigs · cushioning and vibration-damping positions
- Shock-absorbing ring
- Pipe clamp plate
Water Treatment Equipment Seals
Formerly "valve parts" · fits water treatment valves, gate valves, butterfly valves
- Rubber valve seats, various models
Custom Rubber Profiles · Built to Drawing or Sample
Tooling developed from drawings or samples; small-batch trials through to volume supply
Spec list to be added
Every Part Comes with a Parameter Sheet
This is the sheet OEM engineers actually read — verifiable figures and ranges only, no vague claims like "premium quality". Template sample below.
| Machine / Position | Pneumatic precision seeder · depth-control position |
| Material | NBR (nitrile rubber) / EPDM / polyurethane |
| Hardness | Shore A 70 ± 5 |
| Working Temperature | −30 °C ~ +100 °C |
| Key Properties | Oil-resistant / wear-resistant / aging-resistant / tear-resistant |
| MOQ · Lead Time | Stock parts from 500 pcs; tooled parts — TBD |
Our Factory
No "strong capability" boilerplate — just equipment, processes and verifiable numbers
Equipment & Capacity
The internal mixing center went live in October 2023 with automatic batching; at the same time we added 1 injection molding machine and 3 four-meter vulcanizing presses, lifting capacity 30% over the pre-upgrade level. The same year saw two two-story warehouses and a three-story mixing workshop added, 1,408 m² of new floor space. Mixing, extrusion, vulcanization, injection molding, machining, stamping, trimming and assembly are all in our own workshops.
Testing & Quality
Our own laboratory tests vulcanization curves, tensile strength, aging resistance, abrasion and other physical properties. Every batch of rubber compound gets a vulcanization curve test, with periodic sampling checks before release to production; in-process and final inspections set separate sampling rates by product characteristics, so problems are caught in time.
Certifications
ISO 9001 quality management system certification · certified QMS organization · Contract-honoring & Creditworthy Enterprise. Hebei provincial SME for science and technology · national-level SME for science and technology · Hebei provincial innovative SME · Hebei provincial specialized, refined, distinctive & innovative SME.
Company Milestones
Customer Cases
Each case tells one story: what the problem was, and what changed after switching to our parts. Pricing and drawings are not disclosed.
Corn harvester · dehiscing rollers
The original parts wore out too fast, forcing several mid-season stoppages for replacement.
SANY drilling equipment · shock-absorbing rings / pipe clamp plates
Heavy vibration during drilling caused the rubber parts to tear quickly.
Rubber valve seats
Seal faces swelled under long-term immersion in water and exposure to chemical media.
Technical Articles
We only write about the questions buyers actually search for. Every article ends the same way: for exact specs and pricing, upload your drawing.
Send us your drawing — quote within 24 hours
For standard parts you can simply quote the part number or machine model. Not sure about the spec? Snap a photo and send it over — we will help you match it.