We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Two brown Viton O-rings, 4.2 inch inner diameter, 0.21 inch cross-section, round profile, medium-hard finish

Zoro Select

Zoro Select O-Ring Viton 4-1/4 in 3/16 in Brown PK2

SKU CH-6Y8M-FD6R2

Pack of two Viton O-rings rated for -15 °F to 400 °F with FDA-approved material

  • Viton material resists -15 °F to 400 °F
  • FDA-approved compound suits food-contact uses
  • 2 in actual ID fits 4-1/4 in nominal grooves
  • 21 in actual width matches 3/16 in spec
  • Pack of two provides ready spare

Zoro Select Viton O-Ring 4-1/4 in

This pack contains two brown Viton O-rings with a nominal inside diameter of 4-1/4 inches and a 3/16 inch cross-section. They suit maintenance tasks requiring fluoroelastomer seals in inch-measured grooves. The dash number 347 identifies the size for reordering.

Round cross-section Viton with 75A durometer

The medium-hard 75A durometer resists extrusion while sealing against metal surfaces in static or dynamic fits. Viton handles the stated temperature range of -15 to 400 degrees F and offers broad chemical resistance for automotive fluid systems. FDA-approved material allows use in food-contact equipment.

Metal-detectable but not X-ray detectable

These seals trigger metal-detection systems for contamination control yet remain invisible to X-ray inspection. Actual dimensions measure 4.2 inches inside diameter by 0.21 inch width, with a 4.645 inch outside diameter. California Proposition 65 warns of a chemical known to cause reproductive harm.

Highlights

  • Viton material resists -15 °F to 400 °F
  • FDA-approved compound suits food-contact uses
  • 2 in actual ID fits 4-1/4 in nominal grooves
  • 21 in actual width matches 3/16 in spec
  • Pack of two provides ready spare

Specifications

BrandZORO SELECT

Questions about this item

What temperature range does the Viton O-ring handle?

The Viton material is rated for continuous use from minus 15 degrees Fahrenheit up to 400 degrees Fahrenheit.

What are the actual inside and outside diameters of this O-ring?

The actual inside diameter is 4.2 inches and the actual outside diameter is 4.645 inches.

Is any special tool or lubricant required to install these O-rings?

No special tool is required; clean the groove, apply a compatible lubricant, and press the ring in evenly to avoid twisting.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.