Guzzler Replacement Diaphragm-Buna N (FDA-approved material) for G400/G500 models
#13 in diagram
*Special order items will have an asterisk before the configuration description (4X Large, Tall, etc.). Special order items are non-stocking, will be back-ordered and are non-returnable/refundable. Please ensure that the sizing/configurations are correct prior to ordering these items.