When you're shopping for seals, gaskets, and o-rings, the biggest risk is buying a part that doesn't match the machine you're repairing. This head-to-head lines up two very different replacement gaskets: a two-pack of sealing rings for Hamilton Beach blender jars and a single power steering reservoir gasket for heavy trucks. The blender set costs $6.99, while the truck gasket is $4.95, so the price difference is only $2.04. But the real difference is what each part is made to seal.
Quick Verdict
If you're repairing a blender jar that's leaking around the cutter, go with the Hamilton Beach 2 Pack. If you're replacing a power steering reservoir gasket on a Kenworth or Peterbilt truck, go with the Automann 575.1078.2. These two parts are not interchangeable, so your decision should be based on the component you're servicing, not on price.
Comparison Table
| Feature | Hamilton Beach 2-Pack Gasket | Automann Power Steering Gasket |
|---|---|---|
| Price | $6.99 | $4.95 |
| Sealing location | Blender cutter-to-jar connection | Power steering reservoir |
| Fitment | Hamilton Beach domestic and commercial models | Kenworth T660, Peterbilt 379 |
| Part references | Model: Hamilton Beach Blenders | MPN 575.1078.2; OEM NMCQ79699, Q79699, FGQ79699 |
Where Each Product Wins
Hamilton Beach 2-Pack: The advantage here is having two gaskets in one purchase. When you're replacing the seal on a blender, the spare gives you a head start on the next repair. The set is a purpose-made part for that application.
Automann 575.1078.2: This gasket wins on specificity. It includes multiple OEM cross-references and is listed as a new, non-universal part for a particular set of trucks. For a heavy-duty vehicle, that kind of part identification is valuable when you're ordering from a parts list.
Product Notes
Hamilton Beach 2 Pack Blender Replacement Rubber Plastic Gasket Ring Seals

Each gasket in this two-pack is a flat o-ring washer that sits between the cutter and the jar on Hamilton Beach blenders. The dimensions are 1.875 inches inside diameter and 2.68 inches outside diameter, and the listing says it fits all domestic Hamilton Beach models as well as commercial models such as 908 and 909. The parts are gray and new, and they're sold under the Felji brand. A clear reason to pick this set is the included second gasket, which gives you a backup. The trade-off is that it's a flat washer with a specific purpose: the blade-to-jar seal on Hamilton Beach blenders.
Automann 575.1078.2 Power Steering Reservoir Replacement Gasket Ref# FGQ79699

The Automann 575.1078.2 is a single replacement gasket for a power steering reservoir. The manufacturer part number is 575.1078.2, and the description references several Automann reservoir kits, including 575.1078CK, 575.1027, 575.1028, and 575.1078. The OEM references stand out as the main reason to buy this gasket: NMCQ79699, Q79699, and FGQ79699. The downside is that it's a non-universal, single gasket for a specific set of truck applications.
Final Choice by Use Case
Choose the gasket that corresponds to the component you're repairing. If it's a blender jar leak, the Hamilton Beach 2 Pack is the direct fix. If it's a power steering reservoir leak, the Automann 575.1078.2 is the precise replacement. Matching the gasket to the machine is the whole game.