ISO 7483 Silicone Gasket
Manufacturer & Custom Solutions
Dimensions of Gaskets for Use with Flanges to ISO 7005
ZSR makes silicone gaskets to ISO 7483, the international dimension standard for gaskets used with ISO 7005 flanges. Flat gaskets for this standard are usually made from compressed fiber, PTFE or rubber. Silicone is a better choice for international food projects and lines with big temperature changes, because it works from -60°C to +200°C and meets FDA food grade requirements. We produce full face and raised face types in all listed DN and PN sizes. If your project documents ask for ISO 7483 gaskets, send us the size table and we will take care of the rest.
FDA 21 CFR 177.2600
Rubber Articles Intended for Repeated Use
LFGB 30&31
EU Food Contact Materials
USP Class VI / ISO 10993
Biocompatibility of Medical Devices
RoHS / REACH
Environmental Compliance
UL 94
Flammability of Plastic Materials
Built to Your Exact Spec
Custom Silicone Gaskets Options
| Image | Product | Type | Short Info | Action |
|---|---|---|---|---|
 | DIN 32676 Silicone Gasket | Standard & Size | DIN 32676 tri-clamp silicone gaskets, FDA food grade, full size range in stock at ZSR factory. | View Details |
 | AS568 Standard Silicone Gaskets | Standard & Size | AS568 standard-size silicone gaskets for groove-based sealing applications. | View Details |
 | DIN 3869 Silicone Sealing Ring | Standard & Size | DIN 3869 profile sealing rings in silicone for hydraulic ports, working from -60°C to +200°C. | View Details |
 | EN 1514-1 Silicone Gasket | Standard & Size | EN 1514-1 silicone flat gaskets for PN flanges, IBC and FF types, standard and custom sizes. | View Details |
 | Custom Die Cut Silicone Gaskets | Standard & Size | Flat silicone gaskets cut to any shape from sheet stock. Precision cutting for exact fits. | View Details |
 | ISO 7483 Silicone Gasket | Standard & Size | Silicone gaskets to ISO 7483 for ISO 7005 flanges, made for international projects and tenders. | View Details |
 | Custom Molded Silicone Gaskets | Standard & Size | Three-dimensional silicone gaskets made by compression or injection molding. For complex sealing shapes. | View Details |
 | ISO 1127 Silicone Gasket | Standard & Size | Sanitary silicone gaskets matched to ISO 1127 stainless steel tube sizes for food and pharma lines. | View Details |
 | Standard Flange Silicone Gaskets | Standard & Size | Silicone gaskets cut to fit pipe flanges. Matches ANSI, DIN and JIS bolt patterns. | View Details |
 | B16.21 Silicone Gasket | Standard & Size | ZSR makes silicone gaskets to ASME B16.21, ring type and full face type, for Class 150 to 2500 pipe flanges. | View Details |
 | ISO 2852 Silicone Gasket | Standard & Size | ISO 2852 silicone clamp gaskets for food industry couplings, FDA grade, factory direct from ZSR. | View Details |
 | Tri-Clamp / Sanitary Silicone Gaskets | Standard & Size | Hygienic silicone gaskets for food and pharmaceutical pipe connections. CIP and SIP compatible. | View Details |
 | B16.5 Silicone Gasket | Standard & Size | Silicone gaskets from ZSR sized to fit ASME B16.5 flanges, NPS 1/2 to 24 inch, Class 150 to 2500. | View Details |
 | Metric Size Silicone Gaskets | Standard & Size | Metric dimension silicone gaskets for international equipment standards. | View Details |
 | DIN 7603 Silicone Sealing Ring | Standard & Size | Flat silicone sealing rings made to DIN 7603 for screw plugs, banjo bolts and threaded fittings. | View Details |
 | DIN 2690 Silicone Gasket | Standard & Size | Silicone flat gaskets to DIN 2690 / EN 1514-1 dimensions for PN6 to PN40 flanges, food grade available. | View Details |
 | DIN 2691 Silicone Gasket | Standard & Size | Silicone gaskets made to DIN 2691 for tongue and groove flanges PN10 to PN160, ideal for plant repair. | View Details |
 | DIN 11851 Silicone Gasket | Standard & Size | Food grade silicone gaskets for DIN 11851 sanitary unions, DN10 to DN150, FDA material. | View Details |
 | FDA Food Grade Silicone Gasket | Grade | Food-safe silicone gaskets for processing equipment. FDA-compliant and taste-neutral. | View Details |
 | Medical Grade Silicone Gasket | Grade | Biocompatible silicone gaskets for medical devices. Sterilizable with full documentation. | View Details |
 | Industrial Grade Silicone Gasket | Grade | General-purpose silicone gaskets for industrial sealing. Reliable, durable and cost-effective. | View Details |
 | High Temperature / Heat Resistant Silicone Gaskets | Special Function | Heat-resistant silicone gaskets rated for continuous use above 200°C. For ovens and furnaces. | View Details |
 | Flame Retardant Silicone Gaskets | Special Function | Self-extinguishing silicone gaskets meeting UL 94 V-0. For fire-safety applications. | View Details |
 | Solid Silicone Rubber Gaskets | Materials | Solid silicone rubber gaskets with excellent compression set resistance and long service life. | View Details |
 | Fluorosilicone (FVMQ) Gaskets | Materials | Fuel and solvent-resistant silicone gaskets for chemical processing and automotive applications. | View Details |
 | Transparent / Clear Silicone Gaskets | Color | Clear silicone gaskets for visible sealing and light-transmitting applications. | View Details |
 | Black / White Silicone Gaskets | Color | Standard black and white silicone gaskets. Fastest delivery from stock. | View Details |
ISO 7005 and ISO 7483 Relationship
These two standards work as a pair. ISO 7005 defines the flanges — their dimensions, bolt drilling, facings, and pressure ratings. ISO 7483 defines the gaskets that fit inside those flanges. If ISO 7005 is the frame, ISO 7483 is the seal that completes it.
What makes ISO 7005 special is that it brings the world's flange systems under one roof. ISO 7005-1 (steel flanges) specifies two flange families:
ISO 7483 gaskets follow the same logic: one international dimension system covering both families. That is why international projects and tender documents so often name ISO 7483 — it lets engineers from different countries specify the same gasket without arguing about DIN versus ANSI.
At ZSR Silicone Parts, we manufacture the non-metallic flat gasket section of ISO 7483 — raised face (IBC) and full face types — in all listed DN and PN sizes, with full material documentation for tender submissions.
ISO 7483 Gasket Dimensions
Because ISO 7005 covers two flange families, ISO 7483 gasket dimensions come in two matching sets. The PN series follows the European dimensions (aligned with EN 1514-1), and the Class series follows the American dimensions (aligned with ASME B16.21). Common IBC sizes (mm):
DN | PN Series Gasket (PN16) ID × OD | Class Series Gasket (Class 150 / PN20) ID × OD |
|---|---|---|
DN15 | 22 × 50 | 21 × 48 |
DN25 | 35 × 70 | 33 × 67 |
DN50 | 61 × 107 | 60 × 105 |
DN80 | 90 × 142 | 89 × 137 |
DN100 | 115 × 162 | 114 × 175 |
DN150 | 169 × 218 | 168 × 222 |
DN200 | 220 × 273 | 219 × 279 |
DN300 | 325 × 384 | 324 × 410 |
The two families are close — often within 1–2 mm — but not identical. A gasket from the wrong series can sit off-center or short of the raised face. Standard silicone thicknesses: 1.5, 2, and 3 mm (ISO 7483's thickness table runs from 0.25 mm to 3 mm).
We make both series — and we check before we cut. Tell us whether your flange is PN-designated or Class-designated, or simply send the flange standard number from your project documents. ZSR confirms the correct series and manufactures to the exact ISO 7483 tables your specification requires.
Global Project Compatibility
ISO 7483 gaskets show up wherever equipment crosses borders: oil and gas plants with American skids on European pipelines, water treatment plants built by international EPC contractors, power stations sourcing valves from three continents. When the pump is German, the valve is American, and the pipeline is local — ISO dimensions are the common language that holds the project together.
Material recommendations by industry:
Industry / Service | Recommended Material | Why |
|---|---|---|
Water and air lines | Solid silicone | Soft seal at low bolt load, -60°C to +200°C, long outdoor life |
Steam and hot industrial lines | Fiberglass reinforced silicone | Dimensionally stable under high bolt load and heat |
Fuel and oil systems | FVMQ (fluorosilicone) | The only silicone family that resists hydrocarbons |
Potable water and food projects | FDA food grade silicone | Food-safe, odorless, with full compliance documents for tender review |
International food and pharma plants | FDA / USP Class VI silicone | One material documentation package accepted across borders |
Documentation for tenders
International projects live on paperwork. Every ZSR ISO 7483 gasket can ship with material certificates, FDA compliance declarations, dimensional reports, and batch traceability — the documentation package your QA and your client will ask for.
What Is ISO 7483?
ISO 7483 is the international standard that defines the dimensions of gaskets used with ISO 7005 flanges. Published by the International Organization for Standardization, it does for gaskets what ISO 7005 does for flanges: it gives the world one shared size system, so a gasket specified in one country seals a flange made in another. The standard covers the full range of gasket technologies — non-metallic flat gaskets, spiral wound gaskets, metallic ring joints, envelope gaskets, and corrugated metal gaskets — each with its own dimensional tables matched to the ISO flange families. Silicone gaskets live in its most-used section: the non-metallic flat gaskets.
Key Points of the Standard
At ZSR Silicone Parts, we produce ISO 7483 silicone gaskets for international projects every week — full face and raised face types, all listed DN and PN sizes, with tender-ready documentation. Send us your project's size table, and we will take care of the rest.