The Muncie square ring seal, part number 091288-4023 or 0912884023, is a Buna-material square-ring seal with a 4.859-inch inner diameter and a .134-inch cross-section, used in Muncie power takeoff units. Square-ring seals differ from standard O-rings in their flat, four-sided cross-section, which resists spiral twist and provides consistent sealing under dynamic and static conditions. Specifying the correct inner diameter and section size is critical for a leak-free installation, so call us to confirm this seal is the right fit for your specific Muncie PTO model before ordering.
Features
Muncie OEM part number 091288-4023 (also referenced as 0912884023)
Square-ring profile resists spiral twist common to standard O-rings
Buna (Buna-N / nitrile) material for oil and fluid resistance
4.859 in. inner diameter
.134 in. cross-section width
Designed for Muncie power takeoff (PTO) applications
Tech Specs
- Inner Diameter: 4.859 in.
- Cross-Section: .134 in.
- Material: Buna-N (Nitrile)
- Seal Profile: Square Ring
- Application: Muncie PTO
