The Don-Nan top seal is a mechanical addition to any bottom hold-down insert pump, and it prevents a stuck pump scenario caused by solids accumulation around the hold-down. Once the pump has been placed in its seating location, the weight of the sucker rods on the pump pushes the rubber element outward until contact with the tubing wall is made. When retrieval of the pump is needed, pulling up on the rodstring will disengage the setting. Should the rubber element become damaged in operation, it may be replaced without replacing the entire assembly.

Weight	7 lbs
Outside Diameter	2 (in), 2.5 (in), 3 (in)
Setting Type	Mandrel, Pull Tube
Material	8620 carbon steel, 1026/Rubber

Shipping Policy

A note from Trunkline: Trunkline vendors are responsible for shipping products to customer. Vendor specific shipping rates are calculated during check-out. If you have a question about shipping please use the "ASK A QUESTION" button on the product listing page.

Refund Policy

Complete satisfaction is Don-Nan’s goal, and we will work diligently to satisfy all reasonable customer requests. Unused items still in new condition and in their original packaging may returned within 30 days of purchase, and will be refunded minus the costs of shipping. Any items outside of original packaging or with signs of use/ wear will not be refunded.

If you have questions about the vendors refund policy please use the "ASK A QUESTION" button on the product listing page.

Cancellation / Return / Exchange Policy

If you have questions about the vendors refund policy please use the "ASK A QUESTION" button on the product listing page.

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Don-Nan Top Seal

Shipping Policy

Refund Policy

Cancellation / Return / Exchange Policy

General Inquiries