As an Amazon Associate I earn from qualifying purchases.








We have no affiliation with or endorsement from any of the manufacturers mentioned. Diy install saves money! don't go out an buy a new toilet or pay someone an arm-and-a-leg to change the seal - follow our instructions below and you'll be back up-and-running in no time.
Perfect for 300 / 310 / 320 models -- our flush ball seals / flush ball gaskets are a perfect fit for Dometic TM 300, 310 and 320 RV, motorhome and trailer toilets. Please note: this is an aftermarket replacement product produced by Mission Automotive meeting or exceeding the quality of OEM seals based on in-house testing.

1. DOMETIC
#ad
DOMETIC 385343831 Seat Cover Assembly, Bone White
#adDOMETIC #ad - Designed for use with Dometic Sealand toilets. Compatible with 500 series, 500+ series, and 5000 series toilets. Includes seat and cover. Color: Bone. Please refer specification sheet in product information tab for dimensions of the product.More information #ad
Brand | DOMETIC #ad |
Manufacturer | Dometic #ad |
Height | 3 Inches |
Length | 19 Inches |
Weight | 7 Pounds |
Width | 15 Inches |
Part Number | 385343831 |
Model | 385343831 |
More information #ad
2. Dometic
#ad
White, Slow Close Wood Seat, Dometic 302310031 310 Series Standard Height Toilet 19.75" Height
#adDometic #ad - Powerful swirl-Jet Cleaning Action. Efficient with Water at Only One Pint per Flush. Slow-close enameled Wood Seat Improves Comfort. Best-in-class Gravity Flush. Ergonomic foot pedal: press Partially to Add Water, Press Fully to Flush.More information #ad
Brand | Dometic #ad |
Manufacturer | Dometic #ad |
Height | 20 Inches |
Length | 19 Inches |
Weight | 23.2 Pounds |
Width | 15 Inches |
Part Number | 302310031 |
Model | 302310031 |
Warranty | 2 yr warranty |
More information #ad
3. Dometic
#ad
Dometic 302320081 320 Series Standard Height RV Toilet, White
#adDometic #ad - Efficient with Water at Only One Pint per Flush. Dimensions – 22” l x 14. 75” w x 19. 75” h | weight – 36. 99 lbs. From the center line of the bolts to the back of the base at the bottom this toilet is 11".More information #ad
Rim design prevents Spills | Gravity Flush. Deep, 100% vitreous ceramic Bowl | Full-Size Residential Style Wood Seat. Ergonomic foot pedal: press Partially to Add Water, Press Fully to Flush.Brand | Dometic #ad |
Manufacturer | Dometic #ad |
Height | 19.75 Inches |
Length | 22 Inches |
Weight | 36 Pounds |
Width | 14.75 Inches |
Part Number | 302320081 |
Model | 302320081 |
Warranty | 2 years |
More information #ad
4. Dometic
#ad
Bone, DOMETIC 385311864 Seat and Lid for 320 Series Toilet
#adDometic #ad - Package weight: 6. 5 pounds. Package dimensions: 21 Lx 5 Hx 18 W inches. Part number: 385311864. Country of Origin : United States.More information #ad
Brand | Dometic #ad |
Manufacturer | Dometic #ad |
Height | 5 Inches |
Length | 21 Inches |
Weight | 6.5 Pounds |
Width | 6.5 Inches |
Part Number | 385311864 |
Model | 385311864 |
More information #ad
5. Dometic
#ad
Dometic 000-13522-001 Sanitation 302310081 310 Toilet White Std
#adDometic #ad - Universal Fit. Angled 2-bolt style toilets - Older RV toilets models vary; Requires mounting adapter - sold separately. 4-bolt style toilets - 510 and older models; Requires mounting adapter - sold separately.More information #ad
Straight 2-bolt style toilets - most plastic RV toilet models 210, 110 Dometic/SeaLand models.Brand | Dometic #ad |
Manufacturer | DOMETIC SANITATION #ad |
Height | 20 Inches |
Length | 19 Inches |
Weight | 39 Pounds |
Width | 15 Inches |
Part Number | 302310081 |
Model | 302310081 |
More information #ad
6. Dometic
#ad
White, Dometic 302301671 300 Series Low Profile Toilet
#adDometic #ad - Efficient with water at Only One Pint Per Flush. Polypropylene plastic: Durable, Strong and Very Lightweight. Two-bolt installation. Triple-jet Bowl Rinse. Gravity Flush. Full-size Residential Style Seat.More information #ad
Brand | Dometic #ad |
Manufacturer | Dometic #ad |
Height | 13.5 Inches |
Length | 19.75 Inches |
Weight | 7.38 Pounds |
Width | 16 Inches |
Part Number | 302301671 |
Model | 302301671 |
Warranty | 2 years |
More information #ad
7. Dometic
#ad
DOMETIC 385311950 Wood Toilet Seat/Cover, 310 Series, Bone
#adDometic #ad - Elongated style. Easily attaches to your existing toilet through two mounting bolts. Designed for use with 310 series Gravity-Flush toilets; Replaces SE311940 Smooth wooden seat and lid with a bone color finish. Check part numbers to ensure a proper fit.More information #ad
Brand | Dometic #ad |
Manufacturer | Dometic #ad |
Part Number | 385311950 |
Model | 385311950 |
More information #ad
8. Dometic
#ad
DOMETIC 385343829 Toilet Seat Cover and Lid , White
#adDometic #ad - Mounting holes measure 5. 5 in. Please refer to product guide below for better fitment data. Center to center. Item will fit 500 VacuFlush.More information #ad
Brand | Dometic #ad |
Manufacturer | Dometic #ad |
Height | 3 Inches |
Length | 18 Inches |
Weight | 6.3 Pounds |
Width | 15 Inches |
Part Number | 385343829 |
Model | 385343829 |
More information #ad
9. Mission Automotive
#ad
Mission Automotive Dometic -Compatible Flush Ball Seal for 300/310 / 320 RV Toilets, Ideal Replacement Gasket, Comparable to Parts Number 385311658 Kit
#adMission Automotive #ad - These flush ball seals replace Dometic TM flush ball seal kits # 385311658. High-quality material, made to last -- Our valve seals are made from a high-quality, application-specific rubber blend for optimal performance and a long-lasting lifespan.We have no affiliation with or endorsement from any of the manufacturers mentioned. Diy install saves money! don't go out an buy a new toilet or pay someone an arm-and-a-leg to change the seal - follow our instructions below and you'll be back up-and-running in no time.
More information #ad
Does not fit 210, 510 or any Other Models Not Listed. Perfect for 300 / 310 / 320 models -- our flush ball seals / flush ball gaskets are a perfect fit for Dometic TM 300, 310 and 320 RV, motorhome and trailer toilets. Please note: this is an aftermarket replacement product produced by Mission Automotive meeting or exceeding the quality of OEM seals based on in-house testing.
Brand | Mission Automotive #ad |
Manufacturer | Mission Automotive #ad |
Height | 0.5 Inches |
Length | 4 Inches |
Width | 4 Inches |
Part Number | IP300310320 |
Model | IP300310320 |
More information #ad
10. DOMETIC
#ad
DOMETIC 385311658 Flush Ball Seal Kit
#adDOMETIC #ad - Package dimensions: 0254 l x 16. 764 h x 14. 224 w centimeters. Includes seal and instructions only. Country of Origin : China. Package weight : 0045 kilograms.More information #ad
Brand | DOMETIC #ad |
Manufacturer | Dometic #ad |
Height | 0.4 Inches |
Length | 7 Inches |
Weight | 0.05 Pounds |
Width | 5 Inches |
Part Number | 385311658 |
Model | 385311658 |
More information #ad