Transformer Oil Grade Nitrile Sheet
Transformer Oil Grade Nitrile Sheet is a calendared 60 Shore A nitrile butadiene rubber (NBR) sheeting compound engineered for resistance to transformer oils and dielectric fluids. The material meets ASTM D2000 5BG620 A14 B14 EO34 and the General Electric A12C11E7 specification, with a service temperature range of -30 to +250°F. Calendared processing delivers consistent gauge and surface uniformity suited to precision gasket and sealing applications in electrical equipment.
Key Properties
- Hardness, Shore A: 60 ± 5 (ASTM D2240)
- Tensile Strength: 2000 psi min (ASTM D412)
- Elongation: 300% min (ASTM D412)
- Service Temperature Range: -30 to +250°F
- Specification: ASTM D2000 5BG620 A14 B14 EO34 / General Electric A12C11E7
- Process: Calendared
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- Specifications
- Applications
- General Info
- FAQs
Physical Properties
| Property | Value | Test Method |
| Hardness, Shore A | 60 ± 5 | ASTM D2240 |
| Tensile Strength, psi | 2000 min | ASTM D412 |
| Elongation, % | 300 min | ASTM D412 |
| Temperature Range | -30 to +250°F | — |
Compliance
- ASTM D2000 5BG620 A14 B14 EO34 — Compliant
- General Electric A12C11E7 — Compliant
- REACH — Compliant
- RoHS — Compliant
- California Proposition 65 — Compliant
- Transformer housing gaskets and flange seals
- Oil-immersed switchgear and tap-changer sealing components
- Utility substation enclosure gaskets
- High-voltage electrical equipment oil containment seals
- General dielectric fluid system sealing applications
Common industries: Electric Utilities, Power Generation, Electrical Equipment Manufacturing, Industrial Maintenance, OEM Switchgear.
Transformer Oil Grade Nitrile Sheet is a calendared nitrile butadiene rubber sheeting compound formulated specifically for contact with transformer oils and dielectric fluids used in electrical power equipment. At 60 Shore A, the material provides a medium-firm durometer profile well suited to flange gaskets and enclosure seals where moderate compressive load is applied. The calendaring process ensures consistent thickness and surface quality across the sheet, which is critical for uniform sealing performance in precision gasket fabrication.
The compound meets the requirements of ASTM D2000 5BG620 A14 B14 EO34 and the General Electric A12C11E7 specification — a utility-industry qualification that confirms compatibility with transformer oil environments. With a tensile strength of 2000 psi minimum and elongation of 300% minimum, the material maintains mechanical integrity through installation and service.
The -30 to +250°F operating range covers the thermal demands of both outdoor utility installations and elevated-temperature transformer environments. The compound is manufactured in the USA.
Compliant with ASTM D2000 5BG620 A14 B14 EO34, General Electric A12C11E7, REACH, RoHS, and California Proposition 65.
What differentiates Transformer Oil Grade Nitrile Sheet from standard nitrile sheeting grades?
Transformer Oil Grade Nitrile Sheet is specifically compounded and qualified for transformer oil and dielectric fluid resistance, meeting ASTM D2000 5BG620 A14 B14 EO34 and the General Electric A12C11E7 specification. Standard nitrile grades may offer general petroleum resistance but do not carry the GE utility qualification required for transformer and switchgear applications. The calendared construction also provides tighter gauge consistency than molded or extruded alternatives.
Why is hardness important when selecting nitrile sheeting for transformer gasket applications?
Durometer determines how the gasket responds to bolt-load compression on a transformer flange. At 60 Shore A, this material provides enough firmness to resist extrusion into the oil path under clamping load while remaining compliant enough to conform to cast or machined flange surfaces. Selecting the correct hardness is critical to achieving a long-term leak-free seal in oil-filled electrical equipment where re-entry for gasket replacement is costly.
What is the service temperature range for Transformer Oil Grade Nitrile Sheet?
The service temperature range is -30 to +250°F, as listed on the manufacturer's TDS.
Is Transformer Oil Grade Nitrile Sheet suitable for regulated utility and electrical equipment environments?
Yes. The material meets ASTM D2000 5BG620 A14 B14 EO34 and the General Electric A12C11E7 specification, and is compliant with REACH, RoHS, and California Proposition 65, as stated on the manufacturer's TDS.
How should Transformer Oil Grade Nitrile Sheet be specified?
Specify grade (Transformer Oil Grade Nitrile Sheet), thickness, compliance requirements (ASTM D2000 5BG620 A14 B14 EO34 and/or General Electric A12C11E7 as applicable), dimensional tolerances, and finished format.
