Peerless Industrial Group
Peerless Industrial Group Tire Chains Single Bus & RV V-Bar PK2 QG2821
$67.99
0.00080975BTC
In stock
SKF
SKF 7408 Shaft Seal .75 x 1 x .125 HM14 Nitrile Rubber
Rotary shaft seal with nitrile rubber lip for grease-lubricated agricultural machinery up to 3,940 RPM
- ColorTransparent
- SKF 7408 shaft seal fits 0.75 in shafts for reliable engine sealing
- Nitrile rubber lip resists grease, oil, fuel and hot water in agricultural machinery
- Single-lip HM14 design handles up to 10 psi pressure at 3,940 RPM
- Uncoated case installs directly into standard 1 in bore without special coatings
- Transparent nitrile material allows visual inspection of seal condition during maintenance
SKF 7408 rotary shaft seal
The SKF 7408 is a single-lip rotary shaft seal designed for grease-lubricated agricultural machinery. It fits a 0.75 inch shaft inside a 1 inch bore with an overall width of 0.125 inch. The nitrile rubber lip handles animal and vegetable oils, diesel, gasoline, greases, hot water, light heating oil and mineral oils.
HM14 design under continuous rotation
The HM14 design code specifies a contact seal rated for a maximum pressure of 10 psi. It sustains rotational speeds up to 3,940 RPM without the spring loading found in higher-pressure profiles. The uncoated case relies on a press fit to remain seated during prolonged operation in dirty field conditions.
Nitrile lip and press-fit mounting
Nitrile rubber provides broad chemical compatibility with common farm fluids while resisting abrasion from dust ingress. The single lip simplifies installation because no spring alignment is required, yet the interference fit on the 1 inch bore keeps the seal stable through thermal cycles and vibration.
Highlights
- SKF 7408 shaft seal fits 0.75 in shafts for reliable engine sealing
- Nitrile rubber lip resists grease, oil, fuel and hot water in agricultural machinery
- Single-lip HM14 design handles up to 10 psi pressure at 3,940 RPM
- Uncoated case installs directly into standard 1 in bore without special coatings
- Transparent nitrile material allows visual inspection of seal condition during maintenance
Specifications
| Brand | SKF |
|---|---|
| Color | Transparent |
Questions about this item
Will the nitrile rubber lip overheat at 3 940 RPM?
The seal is rated for a maximum rotational speed of 3 940 RPM, so continuous operation at or below that speed keeps the lip within its design temperature range.
What shaft diameter and bore size must I already have for the HM14 seal to fit?
The seal requires a 0.75 in shaft and a 1 in housing bore to match its inside and outside diameters.
Can I keep my existing spring-loaded seal groove and just swap in this 7408?
The 7408 has no spring, so the groove must accept a non-spring HM14 profile; a spring-loaded groove will not seal correctly with this design.
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