Choosing an O-ring is not as simple as grabbing a rubber ring off the shelf. You have to match size, material, and hardness to the fluid, temperature, and pressure of your application. The AS568 012 Black Viton O-Rings 75 Durometer FKM Seal 100-Pack from Macho O-Ring is one listing that tries to answer that need in a single 100-piece pack, and it is worth breaking down before you buy.
Quick verdict
If you need a standard AS568-012 size in a material that stands up to oils, chemicals, and higher heat, this 100-pack of black Viton (FKM) O-rings at 75 Shore A durometer is a practical choice. The listed price is USD 9.99 for 100 rings, which puts the focus on value per piece for a demanding elastomer.
Who it suits
This pack suits technicians, hobbyists, and maintenance workers who need a common AS568-012 size in Viton rather than a shelf full of mixed sizes. The description emphasizes resistance to chemicals, oils, and high temperatures, so it targets environments where standard nitrile might degrade.
What stands out from the listed details
The title and description highlight the AS568-012 dimension, a standard O-ring size used across many types of equipment. The listing is for 100 pieces, so you are not buying a single ring; you get a pack that can cover multiple repairs or spare inventory. The material is Viton (FKM) with a 75 Shore A durometer. According to the description, these are manufactured to industry-standard AS568 dimensions. The country of origin is listed as Belgium, and the unit quantity is 100 in a single pack.
Meaningful trade-offs
The main trade-off is that this is a single size AS568-012, not a multi-size kit. If your equipment requires multiple O-ring sizes, you will need other packs. Also, Viton is generally more expensive than nitrile, but the pack price of USD 9.99 for 100 pieces offers a lower per-ring cost for this material. The 75 durometer is a medium-hardness choice-if your application needs a softer or harder seal, this durometer may not be ideal. The description specifies 'All types of equipment' as the type, but that is a broad claim rather than a specific compatibility promise.
Product note
AS568 012 Black Viton O Rings 75 Durometer | FKM Seal | 100 Pack | Macho O-Ring
This 100-pack is priced at USD 9.99. The product description emphasizes the Viton (FKM) material and 75 Shore A durometer, along with AS568 standard dimensions. If the AS568-012 sizing matches your groove, this pack gives you a dedicated stock of a high-performance sealing ring.
Bottom line
For a 100-piece pack of AS568-012 Viton O-rings at 75 durometer, the USD 9.99 price point is straightforward. If you need this exact size and want chemical, oil, and high-temperature resistance, this listing is worth considering. Just confirm that the AS568-012 dimension fits your specific gland before purchasing.
