Food-grade Liquid Silicone Type-C Port Universal Dustproof Waterproof Plug

# Food-grade Liquid Silicone Type-C Port Universal Dustproof Waterproof Plug

Product Overview

The Food-grade Liquid Silicone Type-C Port Universal Dustproof Waterproof Plug is a precision-molded protective accessory engineered to safeguard Type-C interfaces from environmental damage, contact failure, and premature wear across consumer, industrial, and food-contact use cases. Manufactured via injection molding of high-purity liquid silicone rubber (LSR), this plug delivers a consistent, tight fit for all standard 8.3mm × 2.5mm Type-C receptacles, eliminating gaps that allow ingress of dust, liquid, and debris.

Unlike rigid plastic or low-grade solid silicone alternatives, this LSR plug features a micro-tapered insertion tip with optimized shore hardness to accommodate minor manufacturing tolerances in third-party Type-C ports, ensuring a secure, non-slip fit without scratching delicate internal contact pins. The integrated pull-tab design allows for tool-free removal in 2 seconds or less, while the low-profile 1.2mm external lip sits flush with device chassis to avoid snags during pocket storage or equipment operation. Food-contact-safe formulation extends its utility beyond consumer electronics to food processing equipment, medical devices, and commercial kitchen appliances with Type-C charging or data ports.

Technical Specifications

Material Properties

Physical Performance

Process Parameters

Product Advantages

1. Unmatched Ingress Protection for High-Risk Environments

With an IP67 rating when fully seated, this LSR plug blocks 100% of fine particulate dust (including construction dust, metal shavings, and food processing powder) and resists temporary immersion in up to 1m of water for 30 minutes. Unlike porous solid silicone plugs, the platinum-cured LSR formulation has a non-porous molecular structure that prevents absorption of liquid, oil, and food residues, eliminating bacterial growth risks in food and medical applications.

2. Universal Compatibility and Zero Port Damage

The micro-tapered insertion tip is engineered to fit all standard Type-C receptacles, including those on smartphones, laptops, power banks, industrial sensors, and medical diagnostic equipment, without requiring port-specific customization. The 55 Shore A hardness balances rigidity for secure insertion and softness to avoid scratching gold-plated internal contact pins, reducing contact resistance degradation by 92% compared to unprotected ports over 12 months of field use. The low-friction LSR surface also prevents wear on the port’s internal sealing gasket, extending the lifespan of the host device’s Type-C interface by an average of 3x.

3. Food-Grade Safety for Regulated Industries

Formulated without BPA, phthalates, PVC, or toxic curing agents, this plug meets the strictest global food contact regulations, making it suitable for use on portable blenders, commercial kitchen thermometers, food delivery bag power banks, and pharmaceutical cold chain monitoring devices. The low-odor, non-leaching material will not contaminate food or medical samples even when exposed to temperatures up to 200°C, such as when used on equipment inside commercial ovens or autoclaves.

4. Long-Term Durability in Extreme Conditions

The LSR material resists degradation from UV exposure, ozone, oil, and common cleaning chemicals (including 75% ethanol, quaternary ammonium disinfectants, and food-grade sanitizers), maintaining its physical properties and fit for over 5 years of continuous use. The <8% compression set ensures the plug retains its shape even after being inserted for 12 months straight, eliminating the risk of it falling out during transportation or equipment operation. Unlike plastic plugs that crack at temperatures below 0°C or deform above 60°C, this LSR plug performs reliably in industrial freezers, desert outdoor environments, and high-temperature manufacturing facilities.

Applications

1. Consumer Electronics: Smartphones, tablets, laptops, wireless earbud charging cases, power banks, and portable gaming devices, protecting ports from lint, dust, and liquid splashes during daily carry and outdoor use.
2. Food and Beverage Industry: Portable food thermometers, sous vide cookers, commercial blender control panels, delivery bag heating elements, and inventory scanning devices used in kitchens, food processing plants, and grocery distribution centers.
3. Medical and Healthcare: Portable diagnostic equipment, patient monitoring devices, wearable health trackers, and medical charging stations, where biocompatibility and disinfection resistance are required to meet clinical safety standards.
4. Industrial and IoT Applications: Environmental sensors, factory automation controllers, construction site data loggers, and agricultural monitoring equipment, protecting ports from metal shavings, concrete dust, rain, and extreme temperature fluctuations.
5. Outdoor and Recreation: Action cameras, drone remote controllers, portable power stations, and hiking GPS devices, preventing ingress of sand, mud, and water during camping, hiking, and water sports.

Selection Guide

Hardness Selection

• 50 Shore A (soft variant): Recommended for frequently accessed ports on consumer electronics and medical devices, where easy insertion and reduced port wear are priorities.
• 55 Shore A (standard variant): Suitable for most general-purpose use cases, balancing secure fit and easy removal for industrial, commercial, and consumer applications.
• 60 Shore A (rigid variant): Ideal for ports exposed to high vibration or extreme weather, such as industrial sensors and outdoor IoT devices, where maximum retention force is required.

Size Specifications

• Standard Size: Fits all 8.3mm × 2.5mm Type-C receptacles (99% of consumer and industrial Type-C ports on the market).
• Extended Depth Variant (4.2mm insertion depth): Available for ports with recessed chassis designs (e.g., ruggedized laptops and heavy-duty industrial equipment), providing full sealing for deeper receptacles.
• Custom Sizes: Offered for non-standard Type-C port dimensions with a minimum order quantity of 500 units.

Material Grade

• Standard Food-Grade: Meets FDA 21 CFR Part 177.2600 and EU 10/2011 requirements, suitable for most consumer, food industry, and general industrial applications.
• LFGB-Grade: Passes German LFGB migration testing, recommended for products sold in the EU or used in direct contact with high-fat foods and infant food processing equipment.
• Medical-Grade: Meets ISO 10993 biocompatibility standards, designed for use in clinical and patient-facing medical devices that require regular disinfection.

Quality Assurance

All Food-grade Liquid Silicone Type-C Dust Plugs are manufactured in ISO 9001:2015 certified facilities with strict quality control protocols at every stage of production:

1. Raw Material Inspection: Each batch of LSR is tested for purity, food contact compliance, and mechanical properties before molding, with traceability codes provided for all orders.
2. In-Process Quality Control: 100% of molded plugs undergo dimensional inspection, insertion force testing, and visual defect screening to eliminate burrs, air bubbles, and size deviations.
3. Final Performance Testing: Random samples from each production batch are subjected to IP67 ingress testing, 1000-cycle insertion durability testing, and food contact migration testing to ensure compliance with stated specifications.
4. Certifications: All standard products come with FDA, EU 10/2011, LFGB, and RoHS compliance certificates. Medical-grade variants include ISO 10993 test reports, and flame-retardant variants include UL94 V-0 certification.

We offer a 2-year warranty against manufacturing defects, including loss of elasticity, cracking, and fit failure under normal use conditions. Custom packaging, logo printing, and material formulation adjustments are available for bulk orders with a minimum order quantity of 1000 units.