Which item has shelf life of 3 years?

Which item has shelf life of 3 years?

• A. O-ring
• B. V-ring
• C. Viton O-ring
• D. Gasket

Answer: (B)

The shelf life of seals and gaskets is limited by how elastomeric materials age over time, even when not in use. Heat, moisture, ozone, and UV exposure can cause loss of elasticity, cracking, or hardening, so manuals set a maximum storage time for each type based on material and storage conditions. In the ALREMP context, V-rings are specified with a three-year shelf life, reflecting their typical elastomer formulation and common storage environments. O-rings and Viton O-rings generally have longer shelf lives when stored properly, and gaskets vary, but three years is the recognized storage limit for V-rings.

The shelf life of seals and gaskets is limited by how elastomeric materials age over time, even when not in use. Heat, moisture, ozone, and UV exposure can cause loss of elasticity, cracking, or hardening, so manuals set a maximum storage time for each type based on material and storage conditions. In the ALREMP context, V-rings are specified with a three-year shelf life, reflecting their typical elastomer formulation and common storage environments. O-rings and Viton O-rings generally have longer shelf lives when stored properly, and gaskets vary, but three years is the recognized storage limit for V-rings.