Product Overview
Reliable custom rubber parts for industrial applications
Quick Answer
Silicone groove seal ring is a molded silicone rubber sealing component for groove-mounted compression sealing in covers, housings, lids and circular interfaces. OD, ID, cross-section, groove fit, ring height, wall thickness, Shore A hardness, color, tolerance and packaging are available upon request.
Silicone groove seal ring is a molded elastomer sealing component designed for installation into compatible grooves, housings, covers or circular sealing interfaces. It supports compression sealing, dust protection, water splash resistance and vibration buffering when the groove and compression design are correct. Outer diameter, inner diameter, groove fit, cross-section, hardness and tolerance are available upon request.
Silicone Groove Seal Ring — Extruded Round-Section Sealing Ring with Internal Bonding Groove
The Silicone Groove Seal Ring is a closed-loop sealing ring formed by extruding a round-section silicone profile and joining the two ends with adhesive to create a continuous ring, with a distinctive internal groove running along the cross-section that keeps the bonded seam oriented to the inner face of the ring. Molded in black silicone rubber at 51 ± 5 Shore A hardness, this ring is built to a reference stretched length of 600mm and a cross-sectional diameter of 8mm, verified through documented dimensional inspection.
Key Specifications
| Parameter | Specification |
|---|---|
| Construction | Extruded round-section silicone profile, glued into a closed ring |
| Cross-Section Diameter | Ø8 mm (+0.7 / -0.7 mm) |
| Groove Width | 4.5 mm (+0.5 / -0.5 mm) |
| Groove Depth | 1 mm (+0.25 / -0.25 mm) |
| Stretched Length | 600 mm (+2 / -2 mm) |
| Material | Black silicone rubber |
| Hardness | 51 ± 5 Shore A |
| Joint Type | Adhesive-bonded, groove oriented to the inside of the ring |
| Reference Scale | 1:2 |
What Is a Silicone Groove Seal Ring?
A silicone groove seal ring is a closed-loop sealing component made by extruding a round-section silicone cord and bonding the two ends together to form a continuous ring, with a longitudinal groove molded into the cross-section that must be positioned facing the inner circumference of the ring once assembled. This reference design measures 600mm in stretched length (+2/-2mm) with a round cross-section of Ø8mm (+0.7/-0.7mm), while the internal groove itself measures 4.5mm wide (+0.5/-0.5mm) and 1mm deep (+0.25/-0.25mm). The groove-inward orientation requirement ensures the bonded seam remains protected within the ring’s inner profile, keeping the outer sealing surface smooth and uninterrupted at the point of contact with the mating component.
Dimensional Profile
| Feature | Reference Value |
|---|---|
| Stretched ring length | 600 mm (+2 / -2 mm) |
| Cross-section diameter | Ø8 mm (+0.7 / -0.7 mm) |
| Groove width | 4.5 mm (+0.5 / -0.5 mm) |
| Groove depth | 1 mm (+0.25 / -0.25 mm) |
| Joint orientation | Groove must face the inside of the ring |
The tight dimensional control across all four critical measurements, verified through multi-sample inspection, confirms this ring is manufactured to a repeatable, quality-checked standard suitable for precision sealing applications.
Verified Dimensional Inspection Data
Independent sample inspection across three production units confirms the ring consistently meets its target dimensional specification.
| Inspection Item | Target Specification | Sample 1 | Sample 2 | Sample 3 | Result |
|---|---|---|---|---|---|
| Material hardness | Black silicone, Shore A 51 ± 5 | 52 | 51 | 51 | Pass |
| Cross-section (point 1) | 8 mm (+0.7 / -0.7 mm) | 8.3 | 8.1 | 7.8 | Pass |
| Cross-section (point 2) | 4.5 mm (+0.5 / -0.5 mm) | 4.7 | 4.5 | 4.4 | Pass |
| Cross-section (point 3) | 1 mm (+0.25 / -0.25 mm) | 1.1 | 1.0 | 1.0 | Pass |
| Adhesive bonding | Secure, groove facing inward | Pass | Pass | Pass | Pass |
| Overall length | 600 mm (+2 / -2 mm) | 601 | 602 | 600 | Pass |
All tested samples fall within specified tolerance ranges across hardness, cross-sectional geometry, bonding integrity, and overall length, confirming consistent manufacturing quality across the production batch.
Material Properties: 51 Shore A Silicone Rubber
The ring is molded from black silicone rubber at a controlled 51 ± 5 Shore A hardness, offering a balanced combination of flexibility and structural stability for sealing applications.
- Moderate Flexibility: The 51 Shore A hardness allows the ring to compress and conform to mating surfaces while maintaining its round cross-sectional shape under load.
- Secure Bonded Joint: The adhesive joint is verified for bonding strength and correct inward groove orientation during quality inspection.
- Dimensional Consistency: Tight tolerances across diameter, groove geometry, and length ensure predictable sealing performance across production batches.
- Color Consistency: Manufactured in black for consistent visual identification and appearance.
Key Features
- Extruded round-section profile joined into a closed ring using adhesive bonding.
- Internal groove design keeps the bonded seam oriented to the ring’s inner face for a clean outer sealing surface.
- Verified dimensional inspection data confirms consistent quality across production samples.
- Controlled 51 ± 5 Shore A hardness for reliable compression sealing performance.
- Reference stretched length of 600mm with tight ± 2mm length tolerance.
- Consistent black color across production batches.
Common Applications
- Static sealing rings for enclosures, housings, and access covers.
- Gasket rings for equipment requiring a precise round cross-section seal.
- General industrial sealing where a custom-length groove-jointed ring is more practical than a molded O-ring.
- Applications requiring documented dimensional quality verification for incoming inspection.
Why Choose a Groove-Jointed Sealing Ring
The internal groove design used at the bonding joint allows the seam to be tucked away from the ring’s primary sealing surface, reducing the risk of the joint interfering with sealing performance or catching on the mating component during installation. Combined with extrusion-and-bonding construction, this approach allows custom ring lengths to be produced efficiently from continuous round-section stock while maintaining consistent quality, as confirmed by multi-point dimensional and hardness verification across sample units.
Custom Manufacturing Options
- Custom ring length (circumference) to match specific application dimensions.
- Custom cross-section diameter beyond the standard Ø8mm reference.
- Custom Shore hardness grade for different compression requirements.
- Custom color beyond standard black.
- Custom groove width and depth for alternate joint designs.
FAQ
What is a silicone groove seal ring used for?
A silicone groove seal ring is used for groove-mounted compression sealing in covers, housings, lids, panels and circular equipment interfaces. It helps reduce dust entry, air leakage, splash exposure and vibration transfer when the groove and compression design are suitable.
Can the dimensions be customized?
Yes. Outer diameter, inner diameter, cross-section, groove width, groove depth, ring height, wall thickness and dimensional tolerance are available upon request. Accurate geometry is important because sealing performance depends on groove fit and compression amount.
How should the groove size be confirmed?
Groove width, groove depth and mating surface gap should be confirmed together. The ring must sit securely in the groove and compress enough to form sealing contact without excessive assembly force or permanent deformation.
How should buyers select silicone hardness?
Shore A hardness should be selected according to compression force, rebound behavior, groove geometry and installation method. A softer silicone can compress more easily, while a harder compound may provide firmer sealing support.
Is this seal the same as a standard O-ring?
Not always. A standard O-ring usually has a round cross-section, while a groove seal ring may use a custom cross-section, lip feature or molded profile to fit a specific groove. The final structure should be confirmed according to the sealing interface.
Are samples available before bulk production?
Samples are available upon request. Sample preparation depends on confirmed dimensions, silicone compound, Shore A hardness, color, tooling status, inspection requirements and packaging method. A physical sample or component interface helps verify fit before production.
Request a Custom Quote
Send the confirmed specification, 3D model, physical sample or component interface information for review. Please include OD, ID, cross-section, groove width, groove depth, compression amount, silicone material, hardness, contact media, quantity, annual demand and packaging requirements.
