Off-the-shelf o rings work for most jobs. But not every seal is standard.
When your equipment has unique grooves, pressure demands, or chemical exposure, only custom size o rings will do the job right.
At Hengoseal, we manufacture o rings in any size, material, and hardness—built to match your system’s exact specifications.
When do you need custom size o rings?
Use custom o rings when:
- Groove dimensions don’t match standard sizes
- Your application requires non-round cross sections
- You’re sealing under extreme pressure, temperature, or media
- Tolerances must meet tight engineering specs
- You want private label or branded kits for resale
We serve industries where precision matters:
- Hydraulic & pneumatic systems
- Oil & gas equipment
- Medical and food-grade devices
- Aerospace and cleanroom seals
- Custom engines and high-performance vehicles
What are your options for custom o rings?
We offer complete customization in:
| Tính năng | Options |
|---|---|
| Kích cỡ | Any ID / OD / CS to 0.01mm accuracy |
| Vật liệu | NBR, Viton, EPDM, Silicone, PTFE, FFKM |
| Hardness | 40 – 90 Shore A |
| Màu sắc | Black, Brown, Red, Green, Custom |
| Bao bì | Bulk, Branded Box, Heat Sealed, Labeled Kits |
| Certifications | FDA, REACH, RoHS, ISO9001, TS16949 |
→ View Our Standard Kits for Reference
Need FDA-grade or food-contact rubber?
We offer silicone, PTFE, and Viton for clean environments.
What’s the MOQ for custom o ring production?
Our MOQ is flexible depending on material and size:
| Kiểu | MOQ |
|---|---|
| NBR / Viton | 1,000 pcs per size (most common) |
| Silicon | 2,000 pcs per size (FDA grade optional) |
| PTFE / FFKM | 500 – 1,000 pcs (depending on mold type) |
For urgent projects, we can ship samples or prototypes in as fast as 7–10 working days.
What is the lead time for custom o rings?
| Stage | Lead Time |
|---|---|
| Drawing Approval | 1–2 working days |
| Tooling & Mold Build | 5–10 days (or reuse existing mold) |
| Mass Production | 7–15 days depending on quantity |
| Vận chuyển | 3–7 days (air freight available) |
We support full OEM/ODM manufacturing, including confidentiality agreements, barcode labeling, and QC reports upon request.
How do I submit a custom o ring request?
Just send us:
- A drawing (PDF, CAD, sketch)
- Size and tolerance requirements
- Application environment (media, temp, pressure)
- Material preference (or let us recommend)
- Quantity and packaging needs
We’ll review and quote within 24 hours.
Need help selecting a material?
Hãy xem của chúng tôi PTFE vs Rubber Material Guide.
Can I brand my own custom o ring kits?
Vâng! Chúng tôi cung cấp private label and white-label packaging for:
- Retail resellers
- E-commerce stores
- Repair service brands
- Nhà phân phối
Options include:
- Custom logo printing
- Labeled plastic cases
- Outer carton with SKU / barcode
- Instruction sheet or QR code insert
MOQ for branding starts at 100 kits.
Final Thoughts on Custom Size O Rings
Standard seals don’t fit every job.
If your application demands unique specs, tight tolerances, or extreme durability, a custom size o ring ensures long-term sealing and professional performance.
Request Your Custom O Ring Solution
Need a manufacturer for your non-standard o rings or private label kit?
📩 E-mail: [email protected]
📱 WhatsApp: +86 17622979498
Send us your specs—we’ll handle the rest, from drawing to delivery.
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