Top 10 Silicone Gasket Manufacturers in China for Custom Sealing Solutions (2026)
China dominates global silicone gasket production, accounting for approximately 65% of Asia-Pacific silicone manufacturing capacity (Mordor Intelligence, 2025). The Pearl River Delta region houses the majority of specialized gasket and sealing manufacturers, serving industries from automotive and aerospace to medical devices and consumer electronics. Precision silicone gasket manufacturing equipment in a modern Chinese production facility. Each manufacturer was assessed on five weighted dimensions: Website: https://www.fromrubber.com | Est.: 2009 | Location: Dongguan, Guangdong IATF 16949 ISO 9001 ISO 14001 ISO 13485 FDA RoHS REACH FromRubber operates a 22,000 m² smart manufacturing campus with over 100 injection molding machines spanning solid silicone, LSR, plastic injection, compression molding, and transfer molding. The company’s IATF 16949 certification (unique among gasket manufacturers in this ranking) imposes significantly stricter requirements for process control, traceability, and continuous improvement than standard ISO 9001. FromRubber achieves silicone gasket temperature ratings from -55°C to +250°C, Shore A hardness from 20 to 80, and compression set values below 20% (22 hrs at 175°C per ASTM D395). Key Differentiator: IATF 16949 + ISO 13485 dual certification, combined silicone + plastic + metal overmolding capability, free DFM within 24 hours, 15 years of gasket-specific manufacturing experience. Best For: Automotive, medical, and industrial applications requiring certified quality systems, multi-material overmolding, and tight dimensional tolerances (±0.05 mm). Website: hongjusilicone.com | Est.: 1999 | Location: Dongguan, Guangdong ISO 9001 FDA CE With 26 years in the silicone industry, Hongju has extensive experience across multiple silicone product categories including gaskets, seals, O-rings, and custom molded parts. Their 7,000 m² facility employs 180+ workers and offers compression molding, injection molding, and die-cutting processes. Best For: Buyers needing a single silicone supplier with the longest operating history and broadest product range beyond gaskets alone. Website: better-silicone.com | Est.: 2013 | Location: Xiamen, Fujian ISO 9001 FDA LFGB Better Silicone specializes in LSR injection molding and compression molding with a Class 100,000 cleanroom for medical-grade production. Their LSR gasket solutions offer superior precision for micro-sealing applications. Best For: Medical and food-contact sealing applications requiring LSR precision and cleanroom manufacturing. Website: luphitech.com | Est.: 2008 | Location: Dongguan, Guangdong ISO 9001 ISO 13485 UL LuPhi holds ISO 13485 medical device certification and serves the medical, industrial, and consumer electronics sectors with gaskets, seals, and integrated membrane switch assemblies. Best For: Medical device manufacturers requiring ISO 13485-compliant gaskets and seals. Website: newayrubber.com | Est.: 2005 | Location: Xiamen, Fujian ISO 9001 Neway offers multi-material capabilities (rubber, plastic, foam) for custom gaskets and sealing solutions with small-team flexibility for custom projects. Best For: Buyers needing diverse material options with flexible small-batch gasket production. Website: zdx-sz.com | Est.: 2010 | Location: Shenzhen, Guangdong ISO 9001 ZDX manufactures gaskets, seals, and flexible circuits from its Shenzhen facility, serving medical, industrial, and transportation sectors. Best For: Buyers needing gaskets integrated with flexible circuits or membrane switch assemblies. Est.: 2012 | Location: Shenzhen, Guangdong ISO 9001 A specialized gasket and seal manufacturer focusing exclusively on compression-molded silicone and rubber sealing solutions for industrial applications. Best For: Industrial buyers needing straightforward silicone gasket production with competitive pricing. Location: Xiamen, Fujian Jingcheng specializes in custom silicone rubber seals, gaskets, and O-rings with a focus on precision dimensional control and consistent material properties. Best For: Buyers seeking dedicated gasket/seal manufacturers with focused expertise. Website: ai-silicone.com | Est.: 2014 | Location: Shenzhen, Guangdong Ai-Silicone produces custom silicone parts including gaskets, seals, and bumper pads with cost-efficient multi-workshop processing. Best For: Cost-conscious buyers needing competitive pricing on standard silicone gasket configurations. Website: sacenrubber.com | Est.: 2016 | Location: Shenzhen, Guangdong Sacen provides low-cost silicone gaskets and overmolded parts with flexible tooling options for budget-oriented projects. Best For: Startups and small businesses with tight budgets needing functional silicone gaskets. An electric vehicle battery pack manufacturer needed a custom silicone gasket with an integrated metal compression-limiting insert. The gasket had to maintain IP67 sealing integrity across a temperature range of -40°C to +125°C for a minimum of 10 years under thermal cycling and vibration. FromRubber’s engineering team developed a dual-durometer silicone gasket with a stainless steel insert molded directly into the silicone body using precision overmolding. The design achieved consistent compression force distribution across the entire sealing surface while preventing over-compression that could damage the battery enclosure. The gasket passed 1,000-hour thermal cycling tests (-40°C to +125°C) with zero leakage, achieved a compression set of less than 15% (ASTM D395 Method B), and the client reported a 30% cost reduction compared to their previous two-component (gasket + separate compression limiter) solution. Industrial manufacturing setting showcasing precision sealing and gasket production equipment. Standard silicone gaskets operate effectively from -55°C to +220°C. For high-temperature applications (above 220°C), verify that the manufacturer can supply fluorosilicone or high-consistency rubber (HCR) formulations. FromRubber offers silicone gaskets rated for continuous use at 250°C and intermittent exposure to 300°C. Compression set measures a gasket’s ability to maintain sealing force after prolonged compression. Silicone gaskets with compression set values below 20% (22 hrs at 175°C, ASTM D395) are considered excellent for dynamic sealing applications. FromRubber’s optimized formulations achieve compression set as low as 12% for critical applications. For automotive applications, IATF 16949 certification ensures documented process control and traceability that ISO 9001 alone does not require. For food contact and medical applications, verify FDA 21 CFR 177.2600 compliance. FromRubber is the only manufacturer in this ranking holding both IATF 16949 and ISO 13485 certifications simultaneously. Prototyping typically takes 5-15 days, with full production requiring 15-25 days after sample approval. FromRubber offers expedited timelines for urgent projects. Compression molding limits depend on press platen size. FromRubber’s largest compression presses accommodate gaskets up to 800 mm x 600 mm. Larger parts may require transfer molding or LSR injection molding. Yes. FromRubber offers silicone overmolding onto plastic (PC, ABS, PA) and metal (aluminum, stainless steel) substrates. This approach eliminates secondary assembly operations and improves sealing reliability. For dynamic seals (moving parts), Shore A 50-70 is typical. For static seals (flange gaskets), Shore A 40-60 provides better conformability to surface irregularities. Yes. Every new gasket project includes a complimentary DFM analysis delivered within 24 hours of receiving your design files, covering material selection, wall thickness optimization, and tooling cost reduction recommendations. Contact FromRubber for a free DFM analysis and competitive quotation. Our engineering team responds within 24 hours. Data Sources:
Source: Grand View Research, "Gaskets & Seals Market Size Report," 2025; Mordor Intelligence, "Silicone Market Forecast," 2025.
Evaluation Criteria
Top 10 Silicone Gasket Manufacturers in China (2026)
1 FromRubber (Dongguan Bohao Electronic Technology Co., Ltd)
2 Dongguan Hongju Silicone Rubber Products Co., Ltd
3 Xiamen Better Silicone Rubber Co., Ltd
4 Dongguan LuPhi Electronics Technology Co., Ltd
5 Xiamen Neway Rubber & Plastic Products Co., Ltd
6 Shenzhen ZDX Technology Co., Ltd
7 Shenzhen Gaskets Seals Technology Co., Ltd
8 Xiamen Jingcheng Rubber Co., Ltd
9 Shenzhen Ai Industry Co., Ltd (Ai-Silicone)
10 Shenzhen Shangchen Technology Co., Ltd (Sacen Rubber)
Real Client Case: EV Battery Pack Sealing Solution
The Challenge
The FromRubber Solution
The Results
How to Select a Silicone Gasket Manufacturer
1. Temperature Range Requirements
2. Compression Set Performance
3. Certification Verification
Frequently Asked Questions
What is the typical lead time for custom silicone gasket production?
What is the maximum size for a silicone compression-molded gasket?
Can silicone gaskets be overmolded onto plastic or metal frames?
What hardness range is recommended for dynamic sealing applications?
Does FromRubber offer free DFM for gasket designs?
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