Silicone Threaded Masking Plug with Knurled Head for Port Protection

Silicone Threaded Masking Plug with Knurled Head for Port Protection is engineered and moulded in-house by Dongguan Yunze Silicone Products Co., Ltd. in Dongguan, China. Manufactured from 100% platinum-cured silicone rubber (60°A Shore A, -40°C to +250°C / -40°F to +482°F), this threaded plug is designed for demanding industrial use where heat, chemical exposure and repeated assembly cycles are routine. Every batch is produced under an ISO 9001:2015 quality system with 100% material inspection and secondary curing to eliminate odour and volatile residue.

• Working temperature -40°C to +250°C / -40°F to +482°F - suited to ovens, curing lines, engine bays and sterilisation equipment
• 60°A Shore A compound for a reliable, repeatable seal and easy installation
• Platinum cure: non-toxic, odourless, non-yellowing, low compression set
• Custom colour (Pantone matching), hardness 20-80 Shore A, and logo debossing available
• Mould tooling developed in-house - 3D printing to CNC/EDM steel mould in 3-5 days

• Powder coating, E-coating, anodising and electroplating masking lines
• Automotive body, chassis and wheel painting and shot blasting
• Hydraulic and pneumatic port, thread and bore protection during transit
• Electronics, PCB and sheet metal processing masking
• Autoclave, composite and rubber curing

• 5,000+ m2 manufacturing base in Xiegang Town, Dongguan, Guangdong - 26+ years of silicone and rubber expertise
• In-house CNC & EDM mould workshop, LSR injection and hydraulic vacuum compression presses (51-100 skilled staff, 10+ R&D/QC engineers)
• Compliance: ISO 9001:2015, FDA 21 CFR 177.2600, LFGB, RoHS, REACH - test reports supplied with each shipment
• Flexible MOQ: 300 Pcs for YZ-PLUG-039; lower trial quantities for stock items
• Fast lead time: 3-5 Days for Samples, 7-12 Days for Mass Production
• Export experience: US$50M+ annual export sales across North America, Europe, the Middle East and Southeast Asia

PE bag + export carton; custom logo bag, colour box, blister or display tray on request. FOB Shenzhen / Guangzhou / Ningbo; door-to-door DDP, air and sea freight supported. Trade Assurance: 100% product quality and on-time shipment protection.