Shore A Hardness
Hardness verified from 20A to 80A against your specification, per batch.
Silicone Quality Inspection & Traceability
Three-stage quality control — IQC, IPQC and OQC — backed by calibrated measuring equipment and full batch traceability, so every part ships exactly to specification.
Three-Stage Quality
Incoming, In-Process, Outgoing
Quality is not a final check — it runs through the entire process. Incoming material is verified before use, dimensions are monitored during molding, and every finished batch is inspected before shipping.
- IQC — Incoming — raw silicone compound and material certification
- IPQC — In-process — dimensional SPC during molding and post-cure
- OQC — Outgoing — final inspection, packaging and release
- Batch traceability — material, mold, machine and operator linked
Inspection Equipment
Calibrated Measurement, Real Results
Photographs from our quality lab — the equipment that verifies hardness, tensile strength, dimensions and visual quality on every batch.
Tensile & Elongation
Tensile strength, elongation and tear resistance tested to confirm mechanical performance.
Optical & AOI Inspection
Vision and optical systems measure fine features that calipers cannot reach, and automated optical inspection (AOI) screens surface defects at production speed.
Incoming Material IQC
Raw silicone compound checked and certified before it enters production.
Inspection Records
Every batch is documented with dimensional and visual inspection records.
Precision Probing
Point-to-point probing verifies critical dimensions on molded components.
Test Methods
What We Measure, How
Each test method is selected to match your part and market, and the applicable report is supplied with your shipment.
| Test | Method / Scope |
|---|---|
| Hardness | Shore A durometer, 20A–80A |
| Dimensions | Calipers, optical/vision, SPC on critical dimensions |
| Surface & visual | Automated optical inspection (AOI) for defects, flash and contamination |
| Tensile & elongation | Universal tensile tester |
| Color | Pantone match, ΔE ≤ 1.5 |
| Food contact | FDA 21 CFR / LFGB migration testing (where required) |
| Restricted substances | RoHS / REACH screening |
| Traceability | Lot linkage: material → mold → machine → operator |
Process Control
SPC & Batch Traceability
Critical dimensions are tracked with statistical process control during molding, and every batch is linked back to its raw material, mold, machine and operator — so if a question ever arises, we can trace it to the source.
Measuring Equipment & Calibration
Calibrated Equipment, Traceable Results
Measurements are only as trustworthy as the instruments behind them. The equipment below is used in our quality lab and is maintained on a defined calibration cycle, so a reported dimension or hardness can be traced back to a calibrated instrument.
| Equipment | Measures | Typical range / capability | Calibration |
|---|---|---|---|
| Shore A durometer | Material hardness | 20A–80A | Periodic calibration against reference blocks |
| Digital / dial calipers | Linear dimensions | Sub-millimetre resolution | Calibrated against gauge blocks |
| Universal tensile tester | Tensile strength & elongation | Per ASTM D412 / ISO 37 | Load-cell verification on schedule |
| Optical / vision measuring system | Fine features calipers cannot reach | Non-contact dimensional measurement | Scale calibration on schedule |
| Automated optical inspection (AOI) | Surface defects, flash, contamination | Production-speed screening | Reference-image validation |
| Granite surface plate | Flatness reference for measurement | Stable metrology reference | Flatness check on schedule |
Equipment make, model, measurement range and calibration certificates are documented per instrument and available on request for qualified projects under NDA. If your program requires CMM-level measurement or other specific metrology, tell us the requirement and we will confirm the applicable method and instrument before quoting.
Verified Process Capability
Real Cpk Studies, From Real Production Runs
Process capability is only meaningful when it comes from actual measured production runs. Below are two documented SPC studies — one medical LSR component and one automotive FVMQ seal — each a measured result, not a headline number.
Medical LSR Seal Gasket
Characteristic: inner diameter ⌀ 8.00 mm ± 0.02 mm (USL 8.02 mm / LSL 7.98 mm), tracked with X-bar / R control charts. Measured on a CNC video measuring machine (SMV-3020, accuracy ±0.003 mm).
Cpk 1.24
Pp 1.27 · Ppk 1.19. This measured Cpk reflects the process as it runs today; we monitor it run over run and report the trend, rather than citing a single best case.
Documented & On Request
The full capability study is available on request under NDA for qualified projects — including the sample size, the measuring system used, the production lot, X-bar / R control charts, the raw measurements and the Cpk calculation.
| Study field | Desensitized detail |
|---|---|
| Characteristic | Inner diameter, ⌀ 8.00 mm ± 0.02 mm (USL 8.02 / LSL 7.98) |
| Measuring system | CNC video measuring machine SMV-3020, accuracy ±0.003 mm |
| Control chart | X-bar / R, subgrouped sampling from a single production lot |
| Sample size & data | Reported in the full study (subgroup count, subgroup size, raw measurements and distribution) — released under NDA |
| Result | Cp 1.31 · Cpk 1.24 · Cpu 1.24 · Cpl 1.38 · Pp 1.27 · Ppk 1.19 |
Study 2 · Automotive FVMQ Seal
FVMQ Turbocharger Static Seal
Critical dimension: seal lip thickness, nominal 1.20 mm ± 0.05 mm. This study reports Cp 1.39 / Cpk 1.32 — a measured result from a stable production run, distinct from the medical LSR study above.
| Study field | Desensitized detail |
|---|---|
| Characteristic | Seal lip thickness, nominal 1.20 mm ± 0.05 mm (USL 1.25 / LSL 1.15) |
| Measuring system | SMV-3020 video measuring machine, Instrument ID EQ-001, calibrated |
| Sample size & data | n = 50, sampled sequentially from a stable mould run; no special-cause variation observed within this batch |
| Result | Mean (X̄) 1.198 mm · σ 0.012 mm · Cp 1.39 · Cpk 1.32 |
Measured Distribution — FVMQ Seal Lip Thickness
The measured population follows an approximately normal distribution, centred close to nominal and fully contained between the lower and upper specification limits. The calculated Cp and Cpk exceed 1.32, demonstrating that the moulding process is capable of consistently delivering parts within drawing tolerance under stable production conditions. This chart can be included within PPAP, FAI or process-capability packages for customer engineering approval.
Note on interpretation: a Cpk of 1.24 is a measured result, not a claim of "better than 1.33" — 1.33 is a common general reference, not a universal requirement, and this figure simply reports the process as it runs today. The acceptance threshold for any given characteristic is set by your product's specification and the customer's agreed limits. We confirm the applicable Cpk target per part, report the sample size, measuring system, lot and control charts with the result, and monitor the trend run over run rather than citing a single best case.
Need Inspection Reports With Your Order?
Tell us your quality requirements and we'll confirm the applicable tests and reports before we start.
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