Liquid Silicone Door Lock Buffer Gasket

As a core component for modern smart door locks, our buffer gaskets address the most common pain points of door lock operation: noisy latching, premature mechanical wear from repeated impact, and component misalignment caused by temperature fluctuations. Unlike traditional foam or solid rubber buffer gaskets, our LSR-based design maintains consistent elasticity and compression set resistance over hundreds of thousands of opening and closing cycles, making it an ideal solution for the extended service life requirements of smart access hardware.

At our facility located in 湖北省鄂州市鄂城区经济开发区凡口街道内河巷54号, we utilize precision injection molding for LSR to produce gaskets with tight dimensional tolerances, ensuring seamless compatibility with all standard and custom smart lock form factors. Whether you are manufacturing fingerprint-enabled smart locks, password-access door locks, or Bluetooth-enabled remote access systems, our Liquid Silicone Door Lock Buffer Gaskets provide reliable noise reduction and mechanical protection that meets the quality expectations of global hardware brands.

---

Technical Specifications

Material Properties

Our Liquid Silicone Door Lock Buffer Gaskets are produced from 100% pure addition-cured liquid silicone rubber, with no recycled fillers or harmful additives. Key material properties include:

• Chemical structure: Cross-linked polydimethylsiloxane (PDMS)
• Odor: Non-odor, non-toxic
• Compatibility: Resistant to common cleaning chemicals, skin oils, and atmospheric pollutants
• Flammability rating: UL 94 HB (standard grade)
• Environmental compliance: RoHS and REACH compliant
• Temperature resistance range: -40°C to 200°C (-40°F to 392°F)

Physical Performance

All performance values are tested per ASTM D2000 standard procedures at room temperature (23°C):

Custom hardness grades from 20 Shore A to 70 Shore A are available to match specific impact absorption requirements.

Process Parameters

Our LSR injection molding process delivers consistent quality for mass production:

• Dimensional tolerance: ±0.05mm for standard sizes (≤50mm maximum dimension)
• Minimum wall thickness: 0.5mm
• Maximum size capability: 300mm x 300mm
• Surface finish options: Matte (standard) or low-gloss custom finish
• Color options: Any custom PANTONE color matched to customer requirements, standard options are black, gray, and transparent
• Secondary operations: Precision die-cutting, adhesive backing application, and surface activation available upon request

---

Product Advantages

1. Ultra-Long Service Life Matching Smart Lock Durability Requirements

Unlike EPDM rubber or foam buffer gaskets that degrade, harden, or compress permanently within 2-3 years of daily use, our LSR buffer gaskets maintain more than 90% of their original elasticity after 500,000 opening and closing cycles. This extended service life aligns perfectly with the 10+ year design life of modern smart locks, eliminating the need for early component replacement and reducing after-sales maintenance costs for both manufacturers and end users.

1. Consistent Noise and Vibration Reduction

Liquid silicone rubber’s unique viscoelastic properties absorb impact energy more evenly than rigid or porous materials, reducing latching noise from a typical 65dB to below 45dB for a quiet user experience. The gasket also dampens vibration transfer from the lock mechanism to the door panel, preventing secondary resonance noise that is common with poorly buffered smart lock designs.

1. Wide Temperature Compatibility for Global Deployment

Our LSR material remains flexible in sub-zero winter temperatures (down to -40°C) and does not soften or deform in high summer temperatures (up to 200°C), making our buffer gaskets suitable for both indoor and outdoor smart lock installations across all climate zones. Unlike organic rubbers that become brittle in cold weather, our gaskets maintain consistent impact absorption performance year-round.

1. Precision Molding for Seamless Integration

Our LSR injection molding process achieves tighter dimensional tolerances than conventional compression molding, ensuring the gasket fits perfectly into the designated recess of the smart lock housing with no gaps or overhang. This precision eliminates assembly issues during production and prevents misalignment that can affect lock latching performance over time.

---

Applications

Our Liquid Silicone Door Lock Buffer Gaskets are designed for a wide range of smart lock applications, including:

• Residential Smart Door Locks: Fingerprint recognition locks, password locks, RFID card access locks, and WiFi-enabled remote access locks for front doors, bedroom doors, and apartment entry doors. The gasket reduces night-time entry noise and extends the service life of frequently used residential locks.
• Commercial Smart Access Systems: Office building door locks, shared workspace access locks, co-working space private room locks, and retail storage unit locks that see dozens of activation cycles per day. The durable LSR material withstands heavy daily use without performance degradation.
• Outdoor Smart Locks: Garden gate locks, villa perimeter gate locks, outdoor storage box locks, and short-term rental property locks exposed to extreme temperature changes, rain, and UV radiation. Our LSR gaskets resist UV degradation and do not crack or harden from prolonged outdoor exposure.
• Specialized Smart Lock Products: Smart cabinet locks for medical storage, hotel key card door locks, and smart safe locks that require low toxicity, non-odor, and long-term consistent performance. Our standard material is non-toxic and meets food contact safety requirements for incidental contact with skin and common household materials.

---

Selection Guide

Hardness Selection

Choosing the correct hardness depends on your lock design and impact absorption requirements:

• 20-30 Shore A: Recommended for low-impact, ultra-quiet applications where maximum cushioning is required. Ideal for high-end residential indoor smart locks.
• 30-50 Shore A: Our standard all-purpose grade, suitable for most residential and commercial smart locks. Balances impact absorption and structural stability for long-term use.
• 50-70 Shore A: Recommended for heavy-duty commercial locks and large outdoor smart gate locks that experience higher impact forces during latching. Provides structural support while still delivering effective noise reduction.

Size Specifications

We offer both standard off-the-shelf sizes for common smart lock designs and fully custom tooling for unique form factors:

• Standard sizes: Stock dimensions for most popular 60mm-80mm backset smart locks, available for immediate sampling and small-batch orders.
• Custom sizes: We can produce gaskets to match any custom lock design based on customer 2D CAD drawings or 3D models. Our engineering team can also provide design recommendations to optimize buffering performance based on your lock mechanism specifications.
• Adhesive backing options: Pressure-sensitive acrylic adhesive backing is available for gaskets that require permanent bonding to the lock housing during assembly, eliminating the need for mechanical fasteners.

Material Grade

We offer two core material grades to match different application requirements:

• Standard industrial grade: Suitable for general indoor and outdoor smart lock applications, meets all performance and environmental compliance requirements for global export.
• Low-odor food-contact grade: Recommended for smart locks that come into frequent incidental contact with human skin (such as handle-integrated smart locks) or products sold in markets with strict low-VOC requirements. This grade meets FDA 21 CFR 177.2600 food contact standards.

---

Quality Assurance

橡楚（湖北）橡胶有限公司 operates a quality management system certified to ISO 9001, with strict incoming material inspection, in-process quality control, and finished product testing for every batch of Liquid Silicone Door Lock Buffer Gaskets. All raw materials are sourced from reputable global silicone suppliers, and we do not use low-cost recycled silicone or unapproved fillers to reduce costs, ensuring consistent material performance across every production run.

Our in-house quality testing laboratory conducts routine testing for hardness, compression set, dimensional accuracy, and appearance to ensure every batch meets the agreed specifications before shipment. We provide full material test reports and certification documentation with every order to support our customers’ global product compliance requirements.

For inquiries, custom samples, or bulk order quotations, contact us at:

• Address: 湖北省鄂州市鄂城区经济开发区凡口街道内河巷54号
• Phone: 18071171144
• Email: churubber@163.com

We welcome OEM and ODM partnerships with smart lock manufacturers around the world, delivering high-quality LSR components that meet your performance and cost requirements.