Engineering Services
Technical support for O-ring material selection, groove design, failure analysis and custom seal development.
We are not just an O-ring supplier. Our engineering team works directly with design engineers, quality managers and procurement teams to solve sealing problems before they reach production. Whether you need a material recommendation, a groove design review, or root-cause analysis of a field failure, we provide practical engineering support at no extra cost. Our engineering department combines over 50 years of collective experience in elastomer chemistry, polymer physics, and mechanical seal design. We have supported projects ranging from disposable medical devices to subsea wellhead assemblies, giving us a broad perspective on what works across industries. Every enquiry is handled by a qualified engineer, not a salesperson, ensuring that the advice you receive is technically sound and actionable. The engineering services we offer are structured around the typical lifecycle of a sealing component: specification, design validation, prototyping, failure investigation, and continuous improvement. At each stage, we provide documented recommendations that you can incorporate into your design history file, FMEA, or supplier quality record. This documentation adds credibility to your design process and supports regulatory submissions where required. For new product development teams, our early involvement can prevent costly redesigns. A common scenario is a groove designed with insufficient compression or excessive gland fill, which only becomes apparent during pressure testing. By reviewing your CAD model or drawing before tooling is cut, we identify these issues and suggest corrections that cost nothing to implement at the design stage but would be expensive to fix later. We also work extensively with maintenance and reliability engineers who are troubleshooting field failures. In these cases, we combine visual inspection, dimensional measurement, and operating-history analysis to identify the failure mode. Our goal is not just to replace the failed seal, but to recommend a design or material change that extends service life and reduces unplanned downtime. All engineering consultations are confidential. We routinely sign NDAs before receiving proprietary drawings or application data, and we treat every customer project with the discretion it deserves. Whether you are a startup developing your first product or a Fortune 500 company optimizing a mature design, our engineering team is available to support your success.
What We Offer
Material Selection
Choosing the wrong elastomer is the leading cause of premature seal failure. We review your operating temperature, fluid media, pressure and dynamic conditions to recommend the most cost-effective material that will perform reliably. Our database includes over 200 compounds across NBR, HNBR, FKM, EPDM, VMQ, PTFE and FFKM grades, each with full physical-property data, chemical-compatibility ratings, and regulatory certifications. We also consider secondary factors such as color requirements, electrical conductivity, and metal-detectability to ensure the recommendation is fully aligned with your application constraints.
Groove Design Review
Proper gland geometry is as important as the O-ring itself. We review your groove width, depth, corner radii, surface finish and clearance gaps to verify compression rate, gland fill and anti-extrusion requirements. Recommendations are provided in dimensioned sketches or marked-up drawings that you can import directly into your CAD system. For dynamic applications, we also evaluate reciprocating speed, stroke length, and side-load conditions to ensure the gland geometry supports adequate lubrication film retention without inducing spiral failure or extrusion damage.
Failure Analysis
When a seal fails in the field, we help identify the root cause through visual inspection, dimensional measurement and operating history review. Common failure modes include compression set, extrusion, spiral failure, chemical attack and thermal degradation. We document our findings in a formal failure-analysis report with photomicrographs, cross-sectional measurements, and a corrective-action matrix. This report can be used for internal reliability reviews, customer complaint investigations, or supplier corrective-action requests (SCAR) to your upstream vendors.
Custom Size Development
Non-standard dimensions are our specialty. We manufacture custom inner diameters and cross sections with no tooling charge for standard profiles. Send us your drawing or sample and we will confirm feasibility, tolerance capability and lead time within 24 hours. For complex geometries, we use 3D scanning and reverse engineering to capture the exact profile, then generate a production-ready CAD model for your approval before any tooling is committed.
Sample & Prototype Support
Order as few as one piece for testing and validation. We support prototype builds, PPAP documentation, and first-article inspection for automotive, aerospace and medical device programs. Prototype parts are produced using the same materials and processes as production, so test results are representative. We can also provide design-of-experiment (DOE) sample sets, where multiple material or hardness options are produced simultaneously to accelerate your selection process.
Standards Compliance
We manufacture to AS568, ISO 3601, DIN 3771, JIS B 2401 and customer-specific standards. Material certifications include ISO 9001, RoHS, REACH and FDA compliance documentation. For regulated industries, we support PPAP submission, material batch traceability, and certificate of conformance with full-test data. Our quality team can also assist with converting your internal specification into an internationally recognized standard reference to simplify future sourcing.
Our Process
Submit Your Requirements
Send your drawing, operating conditions or failure photos via email or our quote form.
Submit Your Requirements
Send your drawing, operating conditions or failure photos via email or our quote form.
Engineering Review
Our team reviews your application and provides material recommendations or design feedback within 24-48 hours.
Engineering Review
Our team reviews your application and provides material recommendations or design feedback within 24-48 hours.
Sample Validation
We manufacture samples for testing. Low MOQ means you can validate before committing to production volumes.
Sample Validation
We manufacture samples for testing. Low MOQ means you can validate before committing to production volumes.
Production & Documentation
Once approved, we move to production with full traceability, inspection reports and certificates as required.
Production & Documentation
Once approved, we move to production with full traceability, inspection reports and certificates as required.
Service Menu
Material Selection Advisory
- Written material recommendation
- Chemical compatibility check
- Temperature-pressure suitability matrix
- Cost comparison (if multiple options)
Turnaround: 24 hours
Applies to: New designs, material changes, failure investigations
Groove Design Review
- Dimensioned groove sketch or CAD markup
- Compression rate calculation
- Gland fill verification
- Surface finish and tolerance recommendations
Turnaround: 24–48 hours
Applies to: New product development, retrofit designs, tolerance stack analysis
Failure Analysis
- Visual inspection report with photomicrographs
- Dimensional measurement report
- Root-cause identification
- Corrective action matrix
Turnaround: 48 hours
Applies to: Field failures, warranty claims, supplier SCAR responses
Custom Size Development
- Feasibility assessment
- Tooling quotation (if applicable)
- First-article sample with inspection report
- Production process documentation
Turnaround: 3–5 days for samples
Applies to: Non-standard sizes, obsolete part replacement, OEM private label
Standards Compliance Support
- Standard conversion (internal spec to AS568/ISO)
- Material certification package
- PPAP documentation (levels 1–5)
- First-article inspection report
Turnaround: 5–10 days for PPAP
Applies to: Automotive, aerospace, medical device qualification programs
When to Contact Engineering
Designing a new product and need seal specification before tooling
Submit your groove CAD model or drawing for a design review. We will verify compression rate, gland fill, and material compatibility before you cut metal.
Experiencing field failures and need root cause
Send the failed seal and operating conditions. We will perform failure analysis and recommend a material or design change to prevent recurrence.
Sourcing a discontinued or obsolete seal part number
Provide the original part number, manufacturer, or a physical sample. We will cross-reference or reverse-engineer an equivalent from our catalog or develop a custom replacement.
Qualifying a new supplier for a regulated industry
Request our certification package, schedule a virtual factory tour, and submit a first-article order with full PPAP requirements.
Reducing cost without compromising reliability
Send your current specification. We will evaluate alternative materials, hardness grades, or tolerance classes that maintain performance at lower cost.
Typical Project Cases
Challenge
Premature hydraulic seal failure in dusty, high-humidity conditions with UV exposure.
Analysis
Compression set from elevated temperature + UV cracking on external wiper. Standard NBR 70A with no UV stabilizer.
Solution
Switch to HNBR 80A with UV resistance; modify wiper to double-lip profile.
Result
MTBF increased from 800 to 4,000 hours. Warranty claims dropped 78%.
Challenge
Biocompatible seal for portable dialysis machine needing 500+ autoclave cycles at low compression.
Analysis
Standard platinum-cured silicone showed excessive compression set after 50 cycles. Gland allowed only 12% compression.
Solution
Custom peroxide-cured silicone with proprietary filler reducing compression set 40%. Groove redesigned to 15% compression.
Result
Passed 500 autoclave cycles with <15% compression set. FDA 510(k) clearance achieved.
Challenge
FKM seals failing every 6 weeks in hot sulfuric acid vapor line.
Analysis
FKM chemical attack at temperature limit + thermal expansion over-compression + extruding backup ring.
Solution
Upgrade to FFKM + PTFE anti-extrusion ring with controlled-clearance design. Adjusted groove depth for thermal expansion.
Result
Seal life extended from 6 weeks to 24 months. Maintenance shutdowns reduced from 8 to 2 per year.
Case Studies
Oil & Gas Wellhead Sealing
Extended seal life from 3 months to 18 months by specifying high-fluorine FKM with PTFE backup rings.
Read more →Pharmaceutical Bioreactor
Reduced assembly rejects from 4% to under 0.5% by switching to USP Class VI silicone with tighter tolerances.
Read more →Hydraulic Cylinder Cold Start
Eliminated spiral failures at -25C by upgrading to low-temperature NBR and optimising groove width.
Read more →Frequently Asked Questions
Is there a charge for engineering support?
No. Material selection guidance, groove design review and failure analysis are provided free of charge to all customers and prospective customers. We view engineering support as an investment in long-term customer relationships, not a revenue center.
How quickly can you review a drawing?
Most drawings and technical enquiries are reviewed within 24 hours. Complex failure analyses or multi-material evaluations may take 48 hours. For urgent project deadlines, contact us via WhatsApp and we will prioritize your review.
Can you sign an NDA?
Yes. We routinely sign non-disclosure agreements before receiving proprietary drawings, application data or failure samples. We can work with your standard NDA template or provide our own mutual NDA for your legal review.
Do you provide PPAP documentation?
Yes. We support automotive PPAP levels 1-5, including material certifications, dimensional reports, process flow diagrams and control plans. For medical and aerospace customers, we also provide first-article inspection reports and certificate of conformance with full-test data.
Can you analyse a failed seal we send you?
Yes. Send the failed seal and a brief description of the operating conditions. We will inspect it, identify the failure mode, and recommend a solution. If needed, we can also perform FTIR material identification and Shore hardness verification to confirm whether the correct compound was used in the original part.
Do you offer finite element analysis (FEA) for seal designs?
For critical applications, we partner with specialized FEA consultants who can model seal deformation, contact pressure distribution, and extrusion behavior under simulated operating loads. This service is quoted separately based on model complexity. Please contact us for a project-specific quotation.
Can you help translate a competitor's part number into your product range?
Yes. We maintain a comprehensive cross-reference database of competitor part numbers from major seal manufacturers. Send us the part number and manufacturer name, and we will identify the equivalent size and material from our catalog or recommend a custom alternative if no exact match exists.
What information do you need for a material selection recommendation?
The minimum information required is operating temperature range, fluid media (including concentration for chemicals), pressure, and whether the seal is static or dynamic. Additional details such as reciprocating speed, surface finish, and required service life help us narrow the recommendation to the most cost-effective option.
Do you provide training for our engineering or purchasing team?
Yes. We offer online and on-site training sessions covering O-ring fundamentals, material selection, groove design, failure mode analysis, and standards interpretation. Training can be tailored to your industry focus and team experience level. Contact us to schedule a session.
Can you review a complete seal assembly with multiple components?
Yes. We regularly review assemblies that include O-rings, backup rings, wiper seals, and housing components. Our review checks for tolerance stack-up, interference fits, thermal expansion compatibility, and installation sequence issues that could affect seal performance.
Have a sealing challenge?
Talk to our engineering team. We will review your application and recommend a practical solution.