Product Categories
Custom Plastic Parts
Custom Rubber Parts
Custom PU Parts
Custom Square O Rings
Square O Rings for Enhanced Sealing
Square Rings fix a common problem with round O-rings: they don’t roll or twist under pressure. The square cross-section stays in place and provides stronger, more stable sealing, especially in high-pressure or moving parts. They fit standard O-ring grooves, so you can use them without changing your design.
Get fully custom square O-rings from Flexiparts—no stock parts. All products are tailored to your exact size, cross-section, hardness, and material for a precise fit and reliable performance. Send us your drawings or samples.
Common Square Cut Ring Materials
Selecting the right square rubber seal material ensures long-term performance and compatibility:
- NBR
- EPDM
- FKM
- Silicone
- PTFE
- NR
How To Work with Us
The key to great custom parts is collaboration. As a custom molding manufacturer, our enginnerss will stay connected with you throughout the process, and deliver products that meet your expectations.
- Send us your 2D/3D files or product concept, for an accurate quote, please send us materials, order quanity and surface requirement.
- We review your design,and send you a clear cost within 24 hours.
- Our tooling team builds the mold to your specifications, then send you T1 samples for confirmation.
- Once sample approved, we run full production under strict quality control
- Your finished parts are packaged securely and shipped to your location on time.
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Start Your Project!
Need custom rubber, plastic, or polyurethane parts? FlexiParts offers prototyping and on-demand, low to high-volume production of high-quality, durable components. Whatever your needs, we deliver reliable custom parts on time and within budget. Start your project with us today!