Hangzhou Bright Rubber Plastic Product Co., Ltd. is one of the leading manufacturers and suppliers of custom nr grommet for industrial use in China. If you're going to buy custom nr grommet for industrial use made in China, welcome to get more information from our factory. We also accept customized orders.
Custom NR Grommet for Industrial Use
Product Characteristics
|
Material |
Silicone Rubber |
| Size and Shape | OEM |
| Working Temperature | -60°C ~ +230°C |
| Rebound / Resilience | Industry-leading; instant recovery after compression or impact |
| Tear Strength | Excellent; resists cracking when cables are pulled, or edges rub repeatedly |
| Vibration Isolation | Very good across low-to-mid frequencies; reduces structure-borne noise |
| Abrasion | Good for sliding contact and repeated mechanical wear |
| Lead Time | 1-3 weeks |
| Payment Term | L/C, T/T, WEST UNION, PAYPAL, ESCROW |
| Hardness | 20-90 Shore |
| Quality certification | RoHS, REACH, FDA (food-grade grades), etc. |
Product Introduction
1. Mechanical Character
Natural rubber is defined by motion - it stretches, compresses, and rebounds with less energy loss than any other widely available elastomer. This comes from its long, regular polyisoprene chains, which uncoil under load and snap back when released. A natural rubber grommet therefore does more than insulate a cable hole: it absorbs shock, damps vibration, and survives millions of flex cycles without splitting.
2. Practical Advantages
- Instant rebound - parts return to original shape immediately after compression
- Top-tier tear resistance for harnesses that are connected and disconnected daily
- Effective shock absorption for equipment subject to impact or dropping
- Low-temperature flexibility down to -50°C, far below NBR or CR
- Good abrasion resistance where cables rub against panel edges
- Lower material cost than specialty elastomers for high-volume dynamic parts
3. Typical Installations
- Elevator door operators, lift cabling and hoist-way wire pass-throughs
- Textile looms, sewing machines and quilting equipment with constant vibration
- Mining and construction hand-tools, rock drills and compactors
- Audio equipment, turntables and studio gear where micro-vibration matters
- Bicycle and e-bike frame cable guides, motor mounts and battery compartments
- Printers, copiers and postal sorting machinery with repeated paper-path flex
- Agricultural tractors, harvesters and irrigation pump control panels
4. Configurable Details
- Any ID, OD, gland width, and section from your drawing, sample, or 3D file
- Durometer spread: 30A ultra-soft for delicate wires, 80A firm for heavy loads
- NR / synthetic polyisoprene blends for consistent cure and reduced tack
- Color: black, grey, or matched for brand, safety, or circuit coding
- Geometry: blind, split, multi-bore, conical, domed, stepped, metal-insert bonded
- Post-mold: slit for field retrofit, punch-out centers, notches, kitting
5. Making & Checking
- Compression molding for low-to-medium volume; injection for high-volume precision
- In-house tool design, CNC machining and first-shot validation
- Incoming and in-process checks: ID/OD, hardness, tear sample, visual
- Batch-level traceability from raw bale to finished carton
- Dynamic fatigue and rebound testing available on request
Company Information
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