Tri-Clamp® Orifice Plate Gaskets - EPDM
Note: EPDM Orifice Plates ship with a blank plate finished to 15 µ-in Ra as standard, but we are happy to accommodate special requests for hole boring (concentric or eccentric), electropolishing, metal detectable elastomers, and custom cut patterns. Click to submit a Request for Quote.
Rubber Fab Orifice Plate Gaskets are designed for use with standard Tri-Clamp® Ferrules. These Sanitary Orifice Plates come standard with a 15 µ-in Ra Mechanical Polished 316L stainless steel blank plate, but are available electropolished to 10 µ-in Ra for special applications. We can also furnish these pre-bored to your specifications with eccentric or concentric bores up to 3" in diameter.
EPDM Gaskets are specified by many process equipment manufacturers and are generally suitable for these applications, however service life must be considered and a preventative maintenance program must be in place to mitigate degradation. EPDM Gaskets are generally only suitable for low pressure steam between -30°F and 300°F. EPDM is a good choice when an economical solution for weather and chemical resistant seals is desired. Chemically, EPDM has good resistance to animal oils, vegetable oils, ozone, strong chemicals, and oxidizing chemicals. Do not use EPDM gaskets for mineral oils, solvents, or aromatic hydrocarbons.
Storing EPDM Gaskets:
- Shelf Life: 10 Years from cure date
- Store in original packaging in clean and dry warehouse
- Do not expose to direct sunlight
- Keep more than 6' away from electric motors
- Maintain temperature between 65°F and 85°F
- FDA CFR 21, 177.2600
- U.S. Pharmacopeia Class VI Certification
- Cytotoxicity Criteria
- USDA and 3-A Sanitary Standards
- ASME-BPE Standards
- ADI Free® (Animal Derived Ingredient Free)
- Current Good Manufacturing Practices (CGMP)
- 1/2" thru 6" Available
- Color Code: three green dots • • •
- -30°F to 300°F Temperature Range
- Acceptable for low pressure steam applications
- Peroxide cured
- Many standard drill bore sizes available
- Self Draining
- Reduce Flow
- Balance Backflow
- Equalize Backpressure
- Prevent Dead Legs
- Increase Line Pressure
- Increase Fluid Velocity
- 10 µ-in Ra Electropolished Plate
- Concentric or Eccentric Hole Boring
- Custom Cut Patterns
- Metal Detectable Elastomers
- Engraved Tabs
| 1 = Excellent 2 = Good 3 = Acceptable 4 = Marginal 5 = Poor 6 = Do Not Use | ||||||||
|---|---|---|---|---|---|---|---|---|
| Material | Cont. Steam | Inter. Steam | Pure Water Ambient | Pure Water Hot | Process Fluids Ambient | Process Fluids Hot | Process Fluid Variables 0°-100°C | Temperature Range |
| Tuf-Steel® | 1 | 1 | 1 | 1 | 1 | 1 | 1 | -350°-550°F |
| Tuf-Flex® | 1 | 1 | 1 | 1 | 1 | 1 | 1 | -20°-300°F |
| Food-Flex® | 1 | 1 | 1 | 1 | 1 | 1 | 1 | -30°-250°F |
| PTFE | 1 | 1 | 1 | 1 | 1 | 1 | 3 | -100° to 500°F |
| Silicone (platinum) | 2 | 2 | 2 | 2 | 2 | 2 | 1 | -40°-450°F |
| Silicone (peroxide) | 2 | 2 | 2 | 2 | 2 | 2 | 1 | -40°-450°F |
| FKM | 3 | 2 | 2 | 2 | 2 | 2 | 2 | -30°-400°F |
| EPDM (peroxide) | 3 | 3 | 3 | 3 | 3 | 3 | 3 | -30°-300°F |
| Buna | 0 | 0 | 5 | 5 | 5 | 5 | 5 | -30°-200°F |
Tri-Clamp® Gasket Sizing | |||
| Size | Inside Diameter | Outer Diameter | Bead Diameter |
|---|---|---|---|
| 1/2" | 0.40" (10.2mm) | 0.87" (22mm) | n/a |
| 3/4" | 0.64" (16.2mm) | 0.87" (22mm) | n/a |
| 1" | 0.90" (22.9mm) | 2.00" (50.5mm) | 1.71" (43.5mm) |
| 1-1/2" | 1.39" (35.3mm) | 2.00" (50.5mm) | 1.71" (43.5mm) |
| 2" | 1.88" (47.8mm) | 2.52" (64mm) | 2.22" (56.5mm) |
| 2-1/2" | 2.39" (60.5mm) | 3.05" (77.5mm) | 2.78" (70.5mm) |
| 3" | 2.88" (73.1mm) | 3.58" (91mm) | 3.29" (83.5mm) |
| 4" | 3.85" (97.7mm) | 4.67" (119mm) | 4.33" (110mm) |
| 5" | 4.86" (123.5mm) | 5.68" (144.2mm) | 5.29" (134.3mm) |
| 6" | 5.80" (147.2mm) | 6.57" (167mm) | 6.16" (156.5mm) |
| 8" | 7.80" (198mm) | 8.56" (217.4mm) | 8.15" (207mm) |
| 10" | 9.74" (247.4mm) | 10.55" (268mm) | 10.12" (257mm) |
| 12" | 11.74" (298.2mm) | 12.56" (319mm) | 12.17" (309mm) |