Is this the correct quad / square o-ring from McMaster Carr
to replace the overpriced omc 305098 ?

https://www.mcmaster.com/#4061t236/=1dopob0

Square-Profile Oil-Resistant Buna-N O-Ring
1/8 Fractional Width, Dash Number 214

Packs of 50
$6.94 per pack of 50
4061T236
Material Buna-N Rubber
Cross Section Shape Square
Dash Number 214
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Fractional
Width 1/8
ID 1
OD 1 1/4
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Actual
Width 0.139"
ID 0.984"
OD 1.262"
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Hardness Durometer 70A (Medium)
For Use With Grease
Hydraulic Oils
Specifications Met ASTM D2000, SAE AS568, SAE J200
Temperature Range -30° to 212° F
Color Black
RoHS Compliant
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The also have Quattro seals in the same size..
https://www.mcmaster.com/#90025k347/=1dopvnj
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X-Profile Oil-Resistant Buna-N O-Rings

Also known as Quattro Seals and X-rings, these X-profile O-rings have four points of contact for a better seal in dynamic applications than round-profile O-rings. They also require less compression to make a seal, so they offer a longer service life. These O-rings are made of Buna-N, which is resilient and tear resistant. They resist motor oil.

Inch O-rings have a dash number and are sized to the SAE standard AS568.

For technical drawings and 3-D models, click on a part number.For technical drawings and 3-D models, click on a part number.

Inch
Fractional
Actual
Dash
Number ID OD ID OD Hardness Specifications Met Temperature
Range, °F Color Pkg.
Qty. Pkg.
Wd.: 1/8 Fractional (0.139" Actual)
214 1 1 1/4 0.984" 1.262" Durometer 70A (Medium) ASTM D2000, SAE AS568, SAE J200 -30° to 225° Black 25 90025K347 $5.83
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