The GRACO 16111-9 O-Ring, #328 Buna-N, is a nitrile (Buna-N) rubber sealing component designed for use in GRACO equipment to prevent leaks and ensure reliable operation in fluid handling systems. It is intended for sealing applications where resistance to oils, fuels, and hydraulic fluids is required.

Key Features:

• O-Ring
• #328 Buna-N
• Nitrile (Buna-N) rubber
• Compatible with petroleum greases, mineral oils, vegetable oils, aliphatic hydrocarbons, and hydraulic fluids (HFA, HFB, HFC types). Not compatible with highly aromatic fuels, chlorinated hydrocarbons, polar solvents, or glycol brake fluids.
• Resistant to oils, fuels, and hydraulic fluids
• Reliable sealing performance
• Durable construction for repeated use

Applications:
Used in GRACO fluid handling and lubrication equipment for sealing connections and preventing leaks in systems exposed to oils, fuels, and hydraulic fluids.

Installation Notes:

• Using genuine GRACO O-Rings ensures proper fit, sealing performance, and equipment reliability.
• Inspect O-Ring for damage before installation
• Ensure mating surfaces are clean and free of debris
• Lubricate O-Ring with compatible lubricant if required
• Do not twist or stretch O-Ring excessively during installation
• Regularly inspect O-Rings for wear or degradation
• Replace O-Rings during routine maintenance or if leaks are detected
• Use only compatible lubricants and fluids