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Minimum Qty: 100
Multiplier: 100
*Contact for lower quantities*
Overview
- #12 fastener compatibility
- Galvanized steel construction for corrosion resistance
- EPDM seal provides a watertight barrier
- Dimensions: 0.980" OD, 0.918" ID, 0.803" thickness
- EPDM temperature range: -40°F to 250°F (-40°C to 121°C)
Specifications
Application | For use where the need to keep water from seeping into the fastner or fastener hole. |
Color | Silver |
Finish | Galvanized |
Inside Diameter | 0.918" IN |
IP Rating | IP66 |
IP Rating | IP67 |
Ip Rating | IP66/IP67 |
Material | Galvanized Steel with EPDM Seal |
Material | Galvanized Steel with EPDM |
Material | Pre-Galvanized Steel with Rubber Insert |
Material | Pre-Galvanized Steel with Rubber |
Material | Pre-Galvanized Steel and Rubber |
Material | Pre-Galvanized Steel |
Material | Steel |
Material | Rubber |
Mounting Type | Fastening |
Mounting Type | Sealing Washer |
Nema Rating | NEMA 4X |
Outside Diameter | 0.980" IN |
Seal Material | EPDM |
Series | 40412 |
Series | Minerallac 40412 |
Series | Standard Sealing Washer Line |
Size | Size #12 |
Size | 0.803 in (thickness) x 0.980 in (OD) x 0.918 in (ID) |
Size | #12, 0.803 in thick, 0.980 in OD, 0.918 in ID |
Size | 0.803 in (thick) x 0.980 in (OD) x 0.918 in (ID) |
Size | #12, thickness 0.803 in, OD 0.980 in, ID 0.918 in |
Size | #12 |
Special Features | Features a rubberized underside that forms a water-tight seal around the fastener and fastener hole. |
Thickness | 0.803" IN |
Type | Bonded Sealing Washer |
Package Weight (Imperial) | 0.25 lbs |

40412J
This is a #12 bonded sealing washer with a rubberized underside for forming a water-tight seal around the fastener and fastener hole. It is made of steel with a galvanized finish and EPDM seal material. The washer measures 0.803" thick, with an outside diameter of 0.980" and an inside diameter of 0.918". It is silver in color.
JMSW21
Master Seal(R) Sealing and Cushioning Washer, #8-10 size, 1/2 in. outside diameter, Steel, galvanized finish, 100 per pack
40414
A bonded sealing washer for use where water needs to be kept from seeping into the fastener or fastener hole. It is made of steel with a galvanized finish and has an EPDM seal material. The washer measures 0.803 in thick, with an outside diameter of 0.980 in and an inside diameter of 0.918 in.
40414J
Bonded sealing washer for use where water needs to be kept from seeping into the fastener or fastener hole. It is made of steel with a galvanized finish and has an EPDM seal material. The washer is silver in color and has an outside diameter of 0.980" and an inside diameter of 0.918".Frequently Asked Questions
What material is the 40412 washer made of?
The 40412 washer is made of pre-galvanized steel with a rubber insert.
Does the 40412 washer provide a watertight seal?
Yes, the 40412 washer is designed to create a watertight and dust-tight seal.
Is the 40412 washer corrosion-resistant?
Yes, the pre-galvanized steel construction provides corrosion resistance.
Where is the 40412 sealing washer manufactured?
The 40412 sealing washer is manufactured in the USA.
What size is the 40412 sealing washer?
The 40412 sealing washer is size #12.
Frequently Asked Questions about Minerallac Company
What are the main product lines offered by Minerallac Company?
Minerallac Company offers multiple comprehensive product lines including Minerallac Traditional (electrical fasteners), Strut Fittings, Stainless Steel Fasteners, Black Claw, Impact Staples, and Redmore. Their Traditional line features over a thousand electrical fastener variations covering conduit/cable/wire products, nail straps, beam clamps, metal stud & drywall accessories, acoustical supports, voice/data hardware, and miscellaneous electrical installation components.
What is Minerallac Company's warranty policy?
Minerallac Company provides a limited warranty that guarantees all products are free from defects in material and workmanship. If a product fails to meet this warranty, Minerallac's sole liability is to replace the product at no charge. The warranty is exclusive and does not cover consequential damages, lost profits, or implied warranties of merchantability or fitness for a particular purpose.
What industries and applications are Minerallac Company products used for?
Minerallac Company products are used extensively across electrical, construction, and industrial applications, including conduit and cable support, beam mounting, metal stud and drywall installation, voice/data infrastructure, and low voltage systems. Their product lines cover critical fastening solutions for electrical contractors, with specialized offerings in conduit hangers, straps, beam clamps, cable supports, and mounting hardware for various industrial environments.
What technical support does Minerallac Company offer?
Minerallac Company offers comprehensive technical support through multiple channels, including a toll-free customer service line at 800-927-3293, email support at [email protected], and online resources at www.minerallac.com. Their support covers product selection, technical specifications, and customer service for their extensive line of electrical fasteners, hangers, straps, and hardware across multiple product brands including Minerallac Traditional, Cully, Black Claw, IMPACT Staples, and Minerallac Stainless Steel. Support hours are 8:00 A.M. to 5:00 P.M. CT for their corporate office and 8:00 A.M. to 5:00 P.M. PT for their regional office.
What are the key features of Minerallac Company products?
Minerallac Company products feature a comprehensive range of electrical fasteners and hardware with exceptional versatility, including over 1,000 different sizes, styles, and finishes. Key features include multiple product lines such as Traditional, Strut Fittings, and Stainless Steel options with specialized finishes like 304/316 Stainless Steel, Hot-Dipped Galvanized, and Zinc Electroplate. Their products are engineered for electrical contractors, offering time-saving solutions with high-quality fasteners designed for durability, corrosion resistance, and worker safety across various installation environments.
What environmental ratings do Minerallac Company products have?
Minerallac Company products have robust environmental ratings, including UL 508A Type 1, 2, 3, 4, 4X, 12, and 13 certifications, CSA Type 1-4X, 12, and 13 ratings, and IEC 60529 IP66 protection. The products are WEEE and RoHS compliant, with UV and oil resistance, and can operate in extreme temperatures ranging from -55°C to 105°C, making them suitable for harsh industrial environments.
What accessories are available for Minerallac Company products?
Minerallac Company offers a comprehensive range of accessories across multiple product categories, including hardware, fasteners, and mounting solutions. Key accessories include stove bolts with nuts, wing nut washers, bar joist washers, stud clip adapters, brackets, perforated strapping, cable support options like J-hooks and bridle rings, box mounting brackets, outlet retainers, and various stud and drywall supports. Their accessories are available in multiple finishes such as stainless steel, hot-dipped galvanized, zinc electroplate, and powder-coated options.
How are Minerallac Company products typically installed?
Minerallac Company products are typically installed using a variety of specialized fastening solutions, including conduit hangers, straps, beam clamps, and mounting brackets designed for different electrical and construction applications. Installation methods vary by product type, with options for metal studs, drywall, beams, acoustical surfaces, and low voltage systems. The company offers multiple installation styles such as one-hole and two-hole straps, universal beam clamps, and specific mounting hardware to ensure secure and efficient attachment across diverse electrical and construction environments.
What communication protocols do Minerallac Company products support?
Minerallac Company's Brad product line supports multiple industrial communication protocols, including Ethernet, DeviceNet, PROFIBUS, Modbus, CANopen, Serial, AS-interface, and CC-Link. Their comprehensive portfolio covers over 40 industrial protocols, providing flexible communication solutions for various industrial automation applications from PC-based control to PLC systems.

