One-Stop Rubber Products Supplier from China
Qianlang Rubber Products Factory designs and manufactures a complete range of rubber components for global B2B buyers. From standard sealing rings to fully customized molded parts, every product is produced in-house with controlled compounds, tooling and inspection - so you get consistent quality at competitive cost.
12+ Elastomers for Every Application
Choose the right compound for temperature, chemical, mechanical and regulatory demands. Our in-house mixing keeps every batch consistent.
NBR
NitrileExcellent oil and fuel resistance; good mechanical strength and abrasion resistance.
FKM / Viton
FluoroelastomerHigh temperature (up to 230°C) and broad chemical resistance.
EPDM
Ethylene PropyleneExcellent weather, ozone, steam and water resistance.
Silicone (VMQ)
PolysiloxaneWide temperature range (−60 to 230°C); FDA-grade variants available.
HNBR
Hydrogenated NitrileImproved heat, oil and ozone resistance over standard NBR.
NR
Natural RubberHigh tensile strength, elasticity and fatigue resistance.
SBR
Styrene ButadieneGood abrasion resistance and cost-effective performance.
CR (Neoprene)
ChloropreneBalanced weather, oil, flame and chemical resistance.
IIR (Butyl)
Isobutylene IsopreneExcellent air retention and chemical resistance.
TPE
Thermoplastic ElastomerRecyclable, flexible, easy to color and over-mold.
FFKM
PerfluoroelastomerPremium resistance to extreme chemicals at up to 325°C.
PU (Polyurethane)
Polyester / PolyetherOutstanding abrasion and load-bearing capacity.
Built Around Your Spec - From Drawing to Mass Production
Send us a drawing, sample or 3D file. Our engineering team reverse-engineers the geometry, recommends the right elastomer, and delivers prototypes before full production. Full OEM/ODM service is available for distributors and brand owners.
Drawings & Samples
2D PDF/DWG, 3D STEP/IGES, or physical sample - all accepted.
12+ Materials
Standard and specialty elastomers, FDA/medical grades on request.
Hardness & Tolerance
Shore A 20–90, per ISO 3302 / RMA classes.
In-House Tooling
Self-built molds shorten lead time and protect your IP.
Prototyping
Sample tooling and short runs to validate before mass production.
Compliance Docs
RoHS, REACH, FDA material certs, PPAP packages on request.
Rubber Parts Serving 6 Key Industries
From vehicle powertrains to cleanroom medical equipment, our elastomer components perform in demanding environments.
A Reliable Rubber Manufacturing Partner
Six reasons global B2B buyers source rubber products from Qianlang year after year.
20+ Years of Rubber Manufacturing
Two decades of compounding and molding expertise across global B2B projects.
1,200+ Clients in 40+ Countries
Proven export experience serving distributors, OEMs and brands worldwide.
12+ Elastomer Materials
Broad compound library covering oil, heat, chemical and food-contact needs.
In-House Mold & Tooling
Self-built tooling shortens lead time and safeguards your designs.
ISO 9001 with RoHS / REACH / FDA
Documented quality system and compliant materials for regulated markets.
24-Hour Engineering Response
Fast quoting and technical feedback to keep your projects moving.
Rubber Products & Manufacturing
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Q1. What types of rubber products does Qianlang manufacture?We manufacture four core lines: rubber seals (O-rings, gaskets, washers, grommets, oil seals, quad-rings, V-rings), rubber dampers (bumpers, mounts, buffers, feet), molded rubber parts (plugs, caps, bellows, custom molded shapes), and rubber extrusions (profiles, weatherstrips, cords, edge trims). All are produced in-house at our Haining, Zhejiang facility.
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Q2. What is the difference between compression molding and injection molding?Compression molding places a pre-weighed rubber blank into a heated mold and cures it under pressure - cost-effective for large parts and low-to-medium volumes. Injection molding injects compound into a closed mold - ideal for complex geometries, tight tolerances, and high-volume runs with minimal flash. We operate both processes and recommend the best fit for your part.
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Q3. What is the minimum order quantity (MOQ)?Standard O-rings and seals start around 1,000 pcs; custom molded parts typically start at 500–1,000 pcs depending on size and tooling. Small-batch prototype runs are also available for design validation before mass production.
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Q4. Can you produce custom rubber parts from a drawing or sample?Yes. We accept 2D PDF/DWG drawings, 3D STEP/IGES files, and physical samples. Our engineers reverse-engineer the geometry, recommend the optimal elastomer, and produce sample tooling within 2–4 weeks. Free samples are shipped 1 week after tool approval.
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Q5. Which rubber materials do you offer?We compound 12+ elastomers: NBR, FKM (Viton), EPDM, Silicone (VMQ), HNBR, NR, SBR, CR (Neoprene), IIR (Butyl), TPE, FFKM and PU (Polyurethane). FDA-grade, medical-grade and RoHS/REACH-compliant variants are available on request.
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Q6. What tolerances can you achieve on custom parts?We work to ISO 3302 and RMA tolerance classes. Standard dimensional accuracy is ±0.1 mm for molded parts and ±0.2 mm for extrusions; tighter tolerances are achievable with precision tooling. Hardness is controlled within ±5 Shore A of the target value.
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Q7. Do you provide material certifications and compliance documents?Yes. We issue RoHS and REACH declarations, FDA material certificates for silicone and EPDM, and PPAP packages for automotive qualification. All production batches are traceable by compound lot number.
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Q8. What is the typical lead time for production?Tooling is usually ready in 2–4 weeks. Sample parts ship 1 week after tool approval. Mass production lead time is typically 3–5 weeks depending on volume, with sea or air freight arranged from Shanghai or Ningbo port.
Send Your Inquiry - Get a Quote in 24 Hours
Tell us the part, material, quantity and target price. Our engineering team will respond with material advice, lead time and a competitive quote within 24 business hours.