Seal Ring / Piston Seat
The Seal Ring / Piston Seat is a custom cnc machining component from HUABO Machinery, a factory-direct manufacturer in Ningbo, China. Available in carbon steel/alloy steel/cast iron/bronze. CNC turning + grinding. Designed for hydraulic cylinders, valve bodies, pump seals. We offer OEM/ODM custom manufacturing from drawings or samples, with per-drawing tolerances, 100% pre-shipment inspection, and export packaging. ISO 9001 certified, exporting to 20+ countries in Europe, USA, and Japan.
- Material: Carbon steel/Alloy steel/Cast iron/Bronze
- Process: CNC turning + grinding
- Flatness: Per drawing, 100% inspected
- Surface roughness: Ra 0.8-3.2 per drawing
- Application: Hydraulic cylinders, valve bodies, pump seals
Technical Specifications
CNC Machining produced per drawing. Material certificates and inspection reports provided.
| Parameter | Specification |
|---|---|
| Material | Carbon steel/Alloy steel/Cast iron/Bronze |
| Process | CNC turning + grinding |
| Flatness | Per drawing, 100% inspected |
| Surface roughness | Ra 0.8-3.2 per drawing |
| Application | Hydraulic cylinders, valve bodies, pump seals |
Standards & Inspection Reference
HUABO Machinery follows industry standards and customer drawing requirements for every cnc machining order. Below is our default inspection scope — additional checks available on request.
- Material certificate: Mill test report / heat-lot traceability per batch
- Dimensional inspection: Per drawing tolerances, critical dimensions 100% inspected
- Surface & roughness: Verified per drawing specification (Ra value where applicable)
- Thread / spline gauging: Go/no-go gauge 100% on threaded and splined parts
- Heat treatment verification: Hardness testing on hardened surfaces
- Third-party & NDT: Available on request — UT, MT, PT, hydrostatic test, metallographic
Information to Provide for Quote
To receive an accurate factory-direct quote for the Seal Ring / Piston Seat, please share the following with our team:
Drawings or Samples
PDF, DWG, DXF, STEP, IGES drawings or physical samples for reverse engineering / prototyping.
Material Specification
Material grade and standard (e.g. 45 steel, 42CrMo, 304 SS, QT500, ADC12) per drawing.
Surface Treatment
Required finish and roughness — black oxide, zinc plating, anodizing, polishing, Dacromet, etc.
Order Quantity
Trial and repeat order quantities. Affects unit price and lead time.
Delivery Schedule
Required delivery date and destination port / country.
Special Requirements
Acceptance criteria, inspection plan, certifications, packaging and labeling.
Factory-Direct Advantages
Factory-Direct Pricing
Factory-direct supply at ex-works prices, no middleman markup
100% Pre-Shipment Inspection
Stable quality, 100% pre-shipment inspection, on-site factory audit welcome
OEM/ODM Custom Manufacturing
Custom manufacturing from drawings or samples, OEM/ODM
Exporting to 20+ Countries
Long-term partner for trading companies, exporting to 20+ countries in Europe, USA, and Japan
More CNC Machining
Other custom cnc machining from HUABO Machinery — all manufactured per drawing, OEM/ODM.
Frequently Asked Questions
Common questions about MOQ, lead time, customization, quality, and quoting for the Seal Ring / Piston Seat.