Pipe coupling seats
Use a flat ring on a coupling designed for a face gasket. Match the bore and outside diameter to the available seating area.
FLAT RING · STOCK SIZE
Product view. See the stock size table for dimensions.
From 1 pieceNo drawing neededFreight quoted with order
In stockAll stock parts
Silicone Pipe Connection Gaskets
Flat silicone rings for pipe, gauge and flange connection seats.
Request stock priceQuoted for your size, quantity & delivery address.
MOQ 1 pieceMaterial & finish Solid silicone rubber · Milky white / silicone finish
None — compression mounted
Selected stock sizeID 11 × OD 19 × T 3 mm
ST-FW-SI-WH-I11-O19-T3-A0Select a size and quantity to build your quote.
View quote 0PRODUCT DETAILS
Fit the gasket to the connection seat
A connection gasket works between two mating seats. Its bore must clear the flow path, while its outer edge stays on the sealing land. This range brings together 51 pipe-connection sizes and two compact milky-white connector washers. The listed parts have flat faces and a central opening.
Select by measured ID × OD × thickness. Pipe and flange names help identify the connection family, but they do not replace the actual dimensions or establish a pressure class. Use the three dimensions in the stock table to match the joint.
At a glance
- Material
- Solid silicone rubber
- Colour
- Milky white / silicone finish
- Surface
- Flat annular faces
- Backing
- None — compression mounted
- Minimum order
- 1 piece
SELECT YOUR SKU
Available Stock Specifications
Actual ID × OD × thickness in mm. These are flat silicone gaskets; connection labels do not define a pressure rating.
53 specifications
| Stock SKU | ID (mm) | OD (mm) | Thickness (mm) | Unit | Minimum order | Select |
|---|---|---|---|---|---|---|
ST-FW-SI-WH-I11-O19-T3-A0 | 11 | 19 | 3 | Piece | 1 piece | |
ST-FW-SI-WH-I14-O24-T3-A0 | 14 | 24 | 3 | Piece | 1 piece | |
ST-PG-SI-I6-O12-T2-A0 | 6 | 12 | 2 | Piece | 1 piece | |
ST-PG-SI-I8-O16-T2-A0 | 8 | 16 | 2 | Piece | 1 piece | |
ST-PG-SI-I10-O18-T2-A0 | 10 | 18 | 2 | Piece | 1 piece | |
ST-PG-SI-I16-O24-T2-A0 | 16 | 24 | 2 | Piece | 1 piece | |
ST-PG-SI-I20-O30-T2-A0 | 20 | 30 | 2 | Piece | 1 piece | |
ST-PG-SI-I31-O39-T2-A0 | 31 | 39 | 2 | Piece | 1 piece | |
ST-PG-SI-I35-O45-T2-A0 | 35 | 45 | 2 | Piece | 1 piece | |
ST-PG-SI-I45-O56-T2-A0 | 45 | 56 | 2 | Piece | 1 piece | |
ST-PG-SI-I18-O28-T2-A0 | 18 | 28 | 2 | Piece | 1 piece | |
ST-PG-SI-I22-O38-T2-A0 | 22 | 38 | 2 | Piece | 1 piece | |
ST-PG-SI-I28-O38-T2-A0 | 28 | 38 | 2 | Piece | 1 piece | |
ST-PG-SI-I22-O40-T2-A0 | 22 | 40 | 2 | Piece | 1 piece | |
ST-PG-SI-I59-O72-T2-A0 | 59 | 72 | 2 | Piece | 1 piece | |
ST-PG-SI-I12-O22-T2-A0 | 12 | 22 | 2 | Piece | 1 piece | |
ST-PG-SI-I14-O24-T2-A0 | 14 | 24 | 2 | Piece | 1 piece | |
ST-PG-SI-I22-O28-T2-A0 | 22 | 28 | 2 | Piece | 1 piece | |
ST-PG-SI-I22-O34-T2-A0 | 22 | 34 | 2 | Piece | 1 piece | |
ST-PG-SI-I22-O34-T3-A0 | 22 | 34 | 3 | Piece | 1 piece | |
ST-PG-SI-I22-O34-T5-A0 | 22 | 34 | 5 | Piece | 1 piece | |
ST-PG-SI-I28-O38-T5-A0 | 28 | 38 | 5 | Piece | 1 piece | |
ST-PG-SI-I33-O49-T5-A0 | 33 | 49 | 5 | Piece | 1 piece | |
ST-PG-SI-I41-O55-T5-A0 | 41 | 55 | 5 | Piece | 1 piece | |
ST-PG-SI-I47-O65-T5-A0 | 47 | 65 | 5 | Piece | 1 piece | |
ST-PG-SI-I60-O78-T5-A0 | 60 | 78 | 5 | Piece | 1 piece | |
ST-PG-SI-I76-O93-T5-A0 | 76 | 93 | 5 | Piece | 1 piece | |
ST-PG-SI-I98-O123-T5-A0 | 98 | 123 | 5 | Piece | 1 piece | |
ST-PG-SI-I5-O12-T2-A0 | 5 | 12 | 2 | Piece | 1 piece | |
ST-PG-SI-I6-O14-T2-A0 | 6 | 14 | 2 | Piece | 1 piece | |
ST-PG-SI-I6-O18-T2-A0 | 6 | 18 | 2 | Piece | 1 piece | |
ST-PG-SI-I18-O45-T3-A0 | 18 | 45 | 3 | Piece | 1 piece | |
ST-PG-SI-I25-O58-T3-A0 | 25 | 58 | 3 | Piece | 1 piece | |
ST-PG-SI-I32-O68-T3-A0 | 32 | 68 | 3 | Piece | 1 piece | |
ST-PG-SI-I38-O78-T3-A0 | 38 | 78 | 3 | Piece | 1 piece | |
ST-PG-SI-I45-O88-T3-A0 | 45 | 88 | 3 | Piece | 1 piece | |
ST-PG-SI-I57-O102-T3-A0 | 57 | 102 | 3 | Piece | 1 piece | |
ST-PG-SI-I76-O122-T3-A0 | 76 | 122 | 3 | Piece | 1 piece | |
ST-PG-SI-I89-O138-T3-A0 | 89 | 138 | 3 | Piece | 1 piece | |
ST-PG-SI-I108-O158-T3-A0 | 108 | 158 | 3 | Piece | 1 piece | |
ST-PG-SI-I133-O188-T3-A0 | 133 | 188 | 3 | Piece | 1 piece | |
ST-PG-SI-I159-O212-T3-A0 | 159 | 212 | 3 | Piece | 1 piece | |
ST-PG-SI-I219-O268-T3-A0 | 219 | 268 | 3 | Piece | 1 piece | |
ST-PG-SI-I273-O322-T3-A0 | 273 | 322 | 3 | Piece | 1 piece | |
ST-PG-SI-I325-O378-T3-A0 | 325 | 378 | 3 | Piece | 1 piece | |
ST-PG-SI-I377-O438-T3-A0 | 377 | 438 | 3 | Piece | 1 piece | |
ST-PG-SI-I426-O488-T3-A0 | 426 | 488 | 3 | Piece | 1 piece | |
ST-PG-SI-I480-O539-T3-A0 | 480 | 539 | 3 | Piece | 1 piece | |
ST-PG-SI-I530-O594-T3-A0 | 530 | 594 | 3 | Piece | 1 piece | |
ST-PG-SI-I630-O695-T3-A0 | 630 | 695 | 3 | Piece | 1 piece | |
ST-PG-SI-I720-O810-T3-A0 | 720 | 810 | 3 | Piece | 1 piece | |
ST-PG-SI-I820-O917-T3-A0 | 820 | 917 | 3 | Piece | 1 piece | |
ST-PG-SI-I920-O1017-T3-A0 | 920 | 1017 | 3 | Piece | 1 piece |
No listed SKU matches these filters. Reset to browse the stock list, or request a custom size.
All dimensions are nominal. Choose the full SKU to keep colour and dimensions together. Price, packing and freight are quoted for the selected quantity.
WHERE IT FITS
At the joint between two seats
Gauge connection faces
Choose a compact ring that fits the gauge connection recess and receives even clamping pressure.
Flange contact lands
Select the actual ring dimensions against the flange drawing, including bore clearance and the width of the sealing land.
BEFORE YOU FIT THE PART
Selection & installation
Start with the contact geometry, then check the part in the assembled condition.
Adhesive-backed assembly options →Measure the recess, not only the pipe
Record the seat ID, recess OD and closed gap. A connection name alone does not capture those features.
Keep flat rings and O-rings separate
A flat gasket has a rectangular section. A circular-section O-ring needs a groove designed around its cord diameter.
Specify the service conditions
Include fluid, temperature, clamping arrangement and pressure with the selected SKU so the order describes the complete joint requirement.
Fit the selected construction
Seat the ring flat between clean mating faces. Keep its bore aligned with the passage and tighten the joint evenly to the assembly specification.
YOUR STOCK QUOTE
Review your selection
Adjust quantities or add another size before sending.
Silicone Pipe Connection GasketsNo stock sizes added yet
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Quantities in pieces. Minimum quantity: 1 piece per stock size.
Price & delivery
We quote the selected items and freight to your address. No drawing or tooling is required for a listed stock size.
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Where should we send your quote?
Your selected sizes are included automatically.
Ordering & product questions
Does a DN marking define the actual gasket diameter?
DN is a connection designation. Order using the actual ID, OD and thickness shown for the selected SKU.
Are these gaskets supplied with adhesive?
The listed stock rings are unbacked. The joint seats and clamping arrangement retain them.
Does this page include all multi-material custom gaskets?
This stock page covers the 53 dimensioned silicone rings. FKM, EPDM, PTFE and other drawing-based configurations belong to the custom gasket service.
COMPARE CONTACT OPTIONS
Related stock parts
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View stock sizes →
White Silicone Sealing Washers
Milky-white silicone rings sized for fastener and equipment contact seats.
View stock sizes →Need another outline or hole pattern? Explore custom parts.