Your Trusted Rubber Parts
Manufacturing Partner
Haining Qianlang Rubber Products Factory has spent 20+ years producing rubber seals, dampers, and custom molded components for B2B buyers across more than 40 countries. We turn drawings and samples into reliable, cost-effective rubber parts at scale.
Who We Are
Founded over 20 years ago and based in Haining, Zhejiang Province - within easy reach of Shanghai - Haining Qianlang Rubber Products Factory is a dedicated manufacturer of rubber seals, rubber dampers, and custom molded rubber components.
We serve more than 1,200 B2B customers across 40+ countries, supplying both standardized parts and engineered-to-order solutions for the automotive, industrial, electronics, sanitary, construction, and medical markets.
In-House Manufacturing & Engineering
From tooling to finished part, our integrated workshop keeps quality and lead times under our own control.
Compression Molding
Cost-effective for medium-to-large rubber parts, seals, and gaskets in a wide range of compounds.
Injection Molding
High-precision, high-volume production with tight dimensional tolerances and repeatability.
Rubber Extrusion
Continuous profiles, strips, and cords in custom cross-sections and lengths.
In-House Tooling & Mold Making
Self-built molds shorten lead times, lower cost, and protect your intellectual property.
Engineering & R&D Team
Material formulation and part-design support from experienced rubber engineers.
Testing & Prototyping Lab
In-house sample development and performance verification before mass production.
Custom Rubber Parts, Built Around Your Spec
Standard parts are only part of our business. We design and produce special components from your drawing or sample - across a diverse choice of materials and processes.
Material Selection
NBR, FKM / Viton, EPDM, Silicone, HNBR, and specialty compounds matched to your environment.
Drawing or Sample
We accept 2D PDF / DWG, 3D STEP / IGES files, or a physical sample with dimensions.
Rapid Prototyping
Prototypes and pre-production samples made in-house to validate fit and performance.
Low to High Volume
Flexible runs from 500-piece trials up to full mass production.
Reverse Engineering
Recreate discontinued or competitor parts when no drawing is available.
Application Engineering
Recommend the right hardness, tolerance class, and compound for your use case.
Quality Built Into Every Batch
A documented quality system covers incoming material through final inspection, so every shipment meets spec.
Incoming Material Inspection
Incoming compounds and certificates are verified before they enter production.
In-Process QC
Inline checks at every molding stage catch deviations early.
Hardness Testing
Shore A hardness is verified on every batch against your requirement.
Dimensional Inspection
Calipers, projectors, and CMM per ISO 3302 / RMA tolerance classes.
ISO 9001 Management
A standardized quality system governs the whole workflow.
Compliance Documents
RoHS, REACH, FDA material certificates, and PPAP available on request.
What You Gain by Working With Us
Special needs require individual solutions. Our customers benefit from faster, lower-risk, lower-cost development.
Reduced Development Time
Coordinated engineering and tooling compress your time to market.
Lower Total Cost
Efficient molding and in-house tooling keep unit and project costs down.
Right Material Selection
Correct compound choice extends part life and avoids field failures.
In-House Prototypes & Samples
Validate fit and function before committing to volume.
Competent Production
Mature processes and trained operators deliver consistent output.
Consistent High Quality
Documented QC means every batch meets the same standard.
Talk to our engineering team
Share your drawing or sample - we reply with material advice and a competitive quote within 24 business hours.
A Clear, Five-Step Cooperation Process
From first contact to delivery, every project follows a transparent, predictable path.
Inquiry & Requirements
Share your drawing, sample, or application scenario with our team.
Engineering Review & Quote
We propose material and process, then return a competitive quote.
Sampling & Approval
A prototype is made and validated against your specification.
Mass Production
Tooling is locked and volume manufacturing begins.
QC & Delivery
Parts are inspected, packed, and shipped worldwide.
Our Core Competitive Advantages
Two decades of focused expertise, integrated manufacturing, and a quality-first culture - built to be your reliable long-term partner.
20+ Years of Expertise
Deep, accumulated know-how across rubber compounds and molding.
1,200+ Global Customers
Trusted by B2B buyers in 40+ countries and growing with them.
Full Material Portfolio
From commodity to high-performance and specialty elastomers.
In-House Tooling & Molding
Shorter lead times, tighter cost control, protected IP.
Strict, Documented QC
ISO 9001 system with full inspection and compliance records.
Fast, Technical Response
Engineering reply with quote within 24 business hours.
Ready to Start Your Rubber Part Project?
Send us your drawing or sample today and get material advice plus a competitive quote within 24 business hours.
Request a Quote