Wholesale Extruded Rubber Window Seal

# Wholesale Extruded Rubber Window Seal – Trusted B2B Supplier for the US Market (2026) If you are sourcing wholesale extruded rubber window seal products for the US market, you need a partner that combines decades of manufacturing experience, strict quality assurance, and fast delivery. As a China-based export company with over 20 years in industrial production, we supply durable, custom‑designed extruded rubber seals that meet ASTM and ISO standards. Our factory supports OEM/ODM projects, low MOQs for trials, and competitive FOB pricing. This page explains how our seals solve common window sealing failures, the technical specs that matter for US importers, and how our supply chain ensures you get reliable products on time. ## Why US Importers and Brand Owners Choose Our Wholesale Extruded Rubber Window Seals Window seal failure is one of the top causes of energy loss, water damage, and customer complaints in residential and commercial buildings. Importers, brand owners, and sourcing agents need a supplier that can deliver consistent quality, meet US compliance requirements, and offer design flexibility. Here is how our extruded rubber window seals address those needs. ### Industry Pain Points We Solve - **Inconsistent dimensions** from low‑grade extrusion dies → we use CNC‑machined dies with ±0.2 mm tolerance. - **Poor UV/ozone resistance** causing cracking in 1‑2 years → our EPDM compounds pass ASTM D2000 M2AA 708. - **Long lead times** from traditional factories → our 15‑day turnaround for standard profiles. - **High MOQ barriers** for new product testing → we accept MOQ as low as 500 meters per profile. - **Lack of OEM support** → we offer full design‑to‑production assistance with free prototype samples. --- ## Product Overview: What Makes Our Extruded Rubber Window Seals Different | Parameter | Our Standard | Typical Competitor | |---|---|---| | Material | EPDM, Silicone, Neoprene, TPE | Often single‑material limited | | Hardness (Shore A) | 40–80 ± 3 | ± 5 or wider | | Temperature Range | –50 °C to +150 °C | –30 °C to +120 °C | | Tensile Strength | ≥ 10 MPa | 6–8 MPa | | UV Resistance (1000 hrs) | No cracking, no colour change | Visible degradation | | Certifications | ISO 9001, RoHS, REACH, ASTM D2000 | Limited or self‑declared only | | Lead Time | 10–20 working days | 30–45 days | | MOQ | 500 metres (standard profile) | 2000–5000 metres | Our extrusion lines are equipped with laser measurement systems for real‑time dimension monitoring. Every batch is tested for hardness, tensile strength, and compression set before shipment. ### Application Scenarios - Residential window frames – sliding, casement, hung windows - Commercial curtain wall systems - Automotive window channels - Marine and RV window seals - Industrial door and window sealing --- ## Technical Specifications and Compliance for the US Market For US importers, compliance with ASTM, UL, and building codes is non‑negotiable. Our seals are formulated and tested to meet: - **ASTM D2000** – Material classification for automotive and general‑purpose rubber - **ASTM C864** – Standard specification for preformed gaskets for building glazing and curtain walls - **ASTM E283** – Air leakage resistance test - **ASTM E331** – Water penetration resistance test - **UL 746C** – Fire and UV resistance for outdoor electrical enclosures (when required) - **RoHS 3.0** – Restriction of hazardous substances – all compounds certified - **REACH** – Registration, evaluation, authorisation of chemicals – SVHC free ### Material Selection Guide for US Importers | Climate / Application | Recommended Material | Key Properties | |---|---|---| | Hot & dry (Arizona, Texas) | EPDM, black | Excellent UV/ozone resistance, –50 °C to +150 °C | | Cold & wet (Chicago, New York) | Silicone or EPDM | Low‑temperature flexibility, water tightness | | Coastal / salt‑air (Florida, California) | Neoprene (CR) | Superior salt‑spray and chemical resistance | | Interior / fire‑rated | Silicone + UL 746C | Low smoke, self‑extinguishing | --- ## OEM/ODM Design Support – From Your Sketch to Production in 10 Days As a factory with 20+ years in custom moulded and extruded products, we offer end‑to‑end design assistance. 1. **Concept review** – You send a drawing, sample, or even a photo with dimensions. 2. **Die engineering** – We design and CNC machine the extrusion die in‑house (3–5 days). 3. **Sample approval** – We produce 1‑metre samples for your testing. Free for standard profiles; nominal cost for complex shapes. 4. **Production & QC** – Full batch inspection with dimensional report, hardness certificate, and visual check. 5. **Packaging & shipping** – Custom labelling, barcoding, or retail packaging as per your requirements. > "We worked with three different Chinese suppliers before TJJ. Their die making speed and sample quality are unmatched. The first sample was approved without any revision." – *Mike T., Sourcing Manager, Illinois, USA* --- ## MOQ, Lead Time, and Logistics Terms | Item | Details | |---|---| | MOQ (standard profile) | 500 metres per profile / colour | | MOQ (custom profile) | 1000 metres per profile | | Lead time (after sample approval) | 10–20 working days | | Sample preparation time | 3–7 working days | | Payment terms | T/T, L/C, Western Union | | Incoterms | FOB Tianjin / Qingdao, CIF US West Coast | | Packaging | Coils on pallets, shrink‑wrapped, carton boxes, or customer design | ### Shipping to the USA - **Air freight** – 5–7 days for urgent orders (up to 500 kg) - **Sea freight** – 25–30 days to Los Angeles / Long Beach - **Warehouse** – We maintain stock in Shijiazhuang for fast reorder For first‑time buyers, we recommend starting with a sample order (500 m) to validate fit and quality. Repeat orders benefit from volume discount and priority production slot. --- ## Customer Reviews and Testimonials --- ## Why Choose SHIJIAZHUANG TJJ TRADE CO., LTD. as Your Wholesale Extruded Rubber Window Seal Supplier Our company combines a 20‑year‑old manufacturing base with an experienced export team. Unlike many trading companies, we directly control the extrusion process, compound formulation, and QC laboratory. ### Factory Strength in Numbers - **20+ years** of continuous manufacturing operation - **150+ employees** including engineers, QC staff, and production workers - **12,000 m²** production and storage area - **8 extrusion lines** with automatic cutting and coiling - **In‑house lab** testing hardness, tensile, elongation, compression set, and UV ageing ### Certifications We Hold - **ISO 9001:2015** – Quality management system (audited annually) - **RoHS 3.0** – All compounds tested and certified - **REACH** – Full compliance with EU chemical regulations - **ASTM D2000** – Material classification for rubber products --- ## About the Author --- ## Frequently Asked Questions (B2B) ### What is the typical MOQ for wholesale extruded rubber window seals? For standard profiles, our MOQ is 500 metres per profile/colour. For custom profiles, it is 1000 metres. We can sometimes accommodate smaller trial orders (200–300 m) for first‑time buyers. ### Do you provide free samples for testing? Yes – we supply up to 2 metres of free sample for standard profiles. Custom profile samples are charged at a nominal die cost (typically $80–$200), which is refundable with your first order. ### Can you match UL or ASTM requirements? Absolutely. Our EPDM and silicone compounds are formulated to meet ASTM D2000 and C864. For UL 746C compliance, we use a specific silicone compound. Please specify your requirement when requesting a quote. ### What payment terms do you accept for US importers? We accept T/T (wire transfer), L/C (irrevocable), and Western Union. For first orders, we request 30% deposit and 70% against copy of shipping documents. Repeat customers on good terms can negotiate net‑30 or net‑60. ### How do you handle packaging for wholesale shipments? We package seals in coils on pallets, shrink‑wrapped for protection. Each coil is labelled with part number, quantity, and batch number. We also offer retail packaging – polybag with hang hole, barcode, and your brand logo. --- ## Get Your Custom Quote for Wholesale Extruded Rubber Window Seals Ready to start sourcing? Send us your profile drawing, dimensions, or simply describe your application. We will reply within 24 hours with a technical recommendation and FOB/CIF price. **Contact our export team:** - **Tel / WhatsApp:** +86-15511680668 - **Email:** sindyhao2014@163.com - **Address:** Shijiazhuang, Hebei Province, China - **Contact Page:** [https://www.tjjironcastings.com/contactus.html](https://www.tjjironcastings.com/contactus.html) *All technical data and performance claims are based on standard test conditions. Actual results may vary depending on installation, climate, and usage. Please refer to the actual order confirmation for final specifications and terms.* --- *Learn more about our extrusion capabilities or browse our [iron casting products](https://www.tjjironcastings.com/) as well.*