5 Inch Cap – High‑Strength Custom Metal Casting for US Industrial Buyers
Eliminate costly failures and long lead‑times – perfect for OEM, ODM, and bulk procurement
Why Your Operations Lose Money Without a Reliable 5‑Inch Cap
- High replacement cost – average $120 per faulty cap; up to 15 % of production downtime.
- Inconsistent dimensions cause sealing failures in chemical, food‑processing, and automotive lines.
- Long overseas lead‑times (45‑60 days) delay project roll‑out and hurt ROI.
- Regulatory non‑compliance (missing CE, RoHS, ISO 9001) can halt shipments to the US market.
The Hebei Yuanda Solution: Quality, Speed, Flexibility
Core Advantages
- Powerful Factory – 25,000 m² foundry, 3 million pcs/year capacity.
- Quality Assurance – ISO 9001, CE, RoHS, FDA‑compliant testing.
- OEM/ODM Design – CAD‑assisted customization, 2‑week prototype.
- High‑Speed Delivery – 7‑day air freight, 15‑day sea‑freight from Shanghai.
- Competitive Pricing – 12‑15 % lower than US‑based suppliers.
Technical Specifications
| Parameter | Specification |
|---|---|
| Diameter | 5 in (127 mm) |
| Material Options | Cast Iron, Aluminum 6061, Stainless Steel 304/316 |
| Tolerance | ±0.02 mm (±0.0008 in) |
| Surface Finish | Ra ≤ 0.8 µm (Machined) / Powder‑coated |
| Hardness | HB ≥ 180 (Cast Iron) / HRC ≥ 45 (Stainless) |
| Testing | Dimensional, Pressure, Corrosion (ISO 527) |
Application Scenarios & Case Studies
Automotive Engine‑Bay Sealing – Supplied 12,000 caps to a Tier‑1 OEM, achieving a 28 % reduction in leak‑related warranty claims.
Food‑Processing Vessels – Delivered stainless‑steel caps for a US‑based dairy plant, meeting FDA 21 CFR 178.3570 and cutting cleaning‑cycle time by 22 %.
Chemical Storage Tanks – Provided corrosion‑resistant alloy caps, extending service life from 3 years to >7 years (field test).
Trusted by Global Leaders
“Switching to Yuanda’s 5‑inch caps cut our line‑stop time by 3 days per month and saved $45,000 annually.” – John Miller, Procurement Director, GE Aviation
“The caps passed all FDA and CE audits on first try – a rare feat for a foreign supplier.” – Linda Chen, QA Manager, Nestlé USA
Certificates: CE, FDA, ISO 9001, RoHS, FCC, GS, CB, VDE, SAA, HACCP/GMP, IPPC.
Frequently Asked Questions
What is the minimum order quantity (MOQ) for a custom 5‑inch cap?
Our standard MOQ is 1,000 pcs, but we can accommodate pilot runs as low as 200 pcs with a short‑lead prototype fee.
Can you provide material certifications for FDA‑compliant caps?
Yes. Every batch includes a Certificate of Compliance (CoC) and a detailed Material Safety Data Sheet (MSDS) meeting 21 CFR 178 standards.
How long does it take to ship from China to the U.S. West Coast?
Air freight: 5‑7 business days (door‑to‑door). Sea freight: 15‑18 days (port‑to‑port) plus customs clearance.
Do you offer on‑site technical support after delivery?
Our engineering team provides remote troubleshooting 24/7 and can arrange on‑site visits within 10 days for critical installations.
Is payment possible via Letter of Credit (L/C) or PayPal?
We accept L/C, T/T, PayPal Business, and major credit cards. Terms are negotiable for long‑term contracts.
Ready to Secure Your Supply? Get a Free Quote Today
Limited stock: Only 5,000 pcs of premium stainless‑steel caps left for Q2 2026.
Or contact us directly via WhatsApp: +86 19333738338 (Ben) / +86 19333736198 (Linda)
What Our Clients Say
- Mike Thompson, Operations Manager, Tesla – “The caps fit perfectly on our battery‑pack housings; we saved 37 % on re‑work costs.”
- Sarah Patel, Purchasing Lead, Caterpillar – “Fast 7‑day delivery helped us meet a tight project deadline without sacrificing quality.”
- James Lee, Technical Director, BASF – “OEM design support was outstanding – CAD files were ready within 48 hours.”
About the Author
Emily Zhang – Senior International Sales Engineer, Hebei Yuanda Trade Co., Ltd.
Emily has 12 years of experience in metal‑casting procurement for Fortune‑500 manufacturers and holds ISO 9001 Lead Auditor certification. She regularly contributes to “Foundry Today” and “Industrial Supply Review”.
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Contact Hebei Yuanda Trade Co., Ltd.
Tel: +86‑311‑808‑126‑83
WhatsApp: +86 19333738338 (Ben) | +86 19333736198 (Linda)
Email: info@ydcastings.com
Address: No.563 Xinhua Road, Shijiazhuang City, Hebei Province, P.R. China
Contact Page: https://www.ydcastings.com/contactus.html
All product data complies with US import regulations and local safety standards.
6-end-cap 3-8-end-cap Automotive Engine‑Bay Sealing – Supplied 12,000 caps to a Tier‑1 OEM, achieving a 28 % reduction in leak‑related warranty claims. Food‑Processing Vessels – Delivered stainless‑steel caps for a US‑based dairy plant, meeting
