Sealing a rotating shaft is not the same as seating an o-ring in a groove. If you grab the wrong style, the part either won't fit or won't hold pressure. This guide walks through four practical sealing options: an SKF industrial oil seal set, a JSB TC-style nitrile shaft seal, a Buna-N o-ring pack, and an o-ring assortment. The goal is to match the seal family to the shaft, housing, and groove before you order.
Quick Take
Prices span from $7.80 for the JSB TC oil seal to $20.00 for the Buna-N o-ring set. The spread is large enough to make fit the first decision and budget the second. For a rotating shaft, look for a radial oil seal; for a static joint, an o-ring is often the simpler route. The two shaft seal options differ in measurement system, while the two o-ring options differ in whether you need one size in quantity or a range of sizes on hand.
Price Comparison at a Glance
| Option | Listed Price | Price Bar |
|---|---|---|
| SKF 1.375" x 2.125" x .313" Oil Seal Lot | $19.99 | |
| JSB TC Oil Seal 15X25X7 mm | $7.80 | |
| AS568-235 O-Ring Set | $20.00 | |
| Metric O-Ring Assortment Kit | $12.74 |
Decision Matrix: Match the Seal to the Job
- Choose the SKF oil seal lot if you need a matched pair of inch-dimension industrial shaft seals and the listed size fits your housing.
- Choose the JSB TC oil seal if you are working with a metric shaft and want a nitrile double-lip spring seal.
- Choose the 70-durometer o-ring set if you have a single standard groove and want multiple identical o-rings.
- Choose the o-ring assortment kit if you maintain equipment with a range of fittings and want a variety of rings on hand.
Product Notes
NEW IN BOX LOT OF 2 SKF 1.375" x 2.125" x .313" Industrial Oil Seals 13649
This boxed lot gives you two SKF oil seals in one purchase, so you can replace both sides of a shaft or keep a spare without ordering a second package. The fixed imperial size is 1.375" x 2.125" x .313", and the MPN is 13649. The seals are new and come in a single lot, which helps when you want matching parts for a two-seal arrangement. Because the size is exact, you need to measure the shaft and housing bore before buying; it will not adapt to other diameters. If you already know the fit, this is a solid way to buy a matched pair of industrial shaft seals from one box.
TC oil seal 15X25X7 mm NBR Nitrile double lip spring rotary shaft Grease seals
The JSB TC seal is built around a 15 mm shaft and a 25 mm housing bore with a 7 mm width, making it a metric alternative to the inch-dimension SKF set. Its NBR nitrile body and double-lip spring design suit rotary shaft sealing, and its applications include gearboxes, hydraulic systems, engines, and industrial machinery. Because it is a single seal rather than a kit, it is a focused replacement part for one known repair. The double lip works with the spring to keep grease in and contaminants out. You do have to confirm the shaft size and bore match before ordering, but if they do, this is a direct purpose-built choice.
AS568-235 Buna 70 Duro O-Ring Set Qty 25 Hydraulic Industrial Seals NOS
This package holds a batch of AS568-235 Buna-N o-rings with a 70 durometer hardness. The set is built around one standard size rather than a variety, which makes it useful for recurring replacement work in hydraulic, pneumatic, automotive, fuel, or oil sealing applications. It is new old stock, and the rings are new. The practical limitation is that you get only one dash size: if your groove needs a different AS568 number, this package will not cover it. For a known groove, having a supply of identical o-rings on hand can keep a repair moving without a second trip to the parts shelf.
O-Ring Assortment Kit 400Pc Nitrile Rubber Metric Sizes Industrial Seals
This assortment covers a broad range of metric o-ring sizes and thicknesses. The nitrile rings range from 4 mm to 30 mm outer diameter, with thickness options of 1 mm, 1.5 mm, 1.9 mm, 2.4 mm, and 3.1 mm, stored in a labeled, resealable case. You get a variety of sizes rather than a matched set, which helps when you are not certain which ring a fitting needs. The labeled, resealable case helps keep sizes separated while you work through a repair. The limitation is that you must identify the correct size from the case and confirm it fits before assembly; it is not a precision kit for one specific groove.
Final Recommendation by Use Case
If you need two inch-dimension shaft seals, the SKF lot is the most complete way to buy it. If your machine uses a metric shaft, the JSB TC seal gives you a purpose-built rotary shaft seal. When you need one standard o-ring size in quantity, the single-size o-ring set is the repeatable choice. And when you want a supply of o-rings for unknown future repairs, the assortment kit offers the widest range on the shelf. Measure the shaft, housing, and groove first; then choose the option that matches the job.
